Yes, they were men. He admitted this while he walked unresistingly between two of the giants. Another went before them and lighted the way with the green ray of a flame-thrower on the melting rock. These were men—men of a different sort. Evolution, working strange changes underground, had made them half beasts, diggers in the dark, mole-men!

They were passing through a long tunnel that went steadily down. Cross passages loomed blackly; ahead of them the leader was throwing his flame upon the walls of a great vault.

Rawson had ceased to take note of their movements. What use to remember? He could never escape, never retrace his steps.

He tried to whip up a faint flicker of hope at thought of Smithy. Smithy had seen him go, had seen the red mole-men, of course. And he had got away—he must have got away! He would go for help....

But, at that, he groaned inwardly. Smithy would go for help, and then what? He would be laughed out of any sheriff's office; he would be locked up as insane if he persisted. Why should he persist—for that matter, why should he go at all? Smithy would not believe for a single minute that Rawson was still alive.

* * * * *

His thoughts ended. Webbed hands, wrapped tightly about his arms, were thrusting him forward into a great room. The green flame had been snapped off. One last hot circle on the high wall showed only a dull red. But before it faded, Dean saw dimly the outlines of a tremendous cavern. He saw also that these walls were unglazed, raw; they had never been melted.

Below the rough and shattered sides heaps of fragments were piled about the room.

Fleetingly he saw the shadowed details; then darkness swallowed even that little he had seen. Clanging metal told of a closing door; a line of red outlined it for an instant to show where it was welded fast. He was a prisoner in a cell whose walls were the living rock.

For a long time he stood motionless, while the heavy darkness pressed heavily in upon his swimming senses; he sank slowly to the floor at last. He was numbed, and his mind was as blank as the black nothingness that spread before his staring eyes. In a condition almost of coma, he had no measure or count of the hours that passed.

Then a fever of impatience possessed him; his thoughts, springing suddenly to life, were too wildly improbable for any sane mind, were driving him mad. He forced himself to move cautiously.

* * * * *

On the floor he had seen burnished gold, shining dully as he entered. There had been a thick vein of yellow in the rock. The floor, at that place, was rough beneath his feet, as if the hot metal had been spilled.

His hands groped before him as he remembered the heaps of rock fragments. Then his feet found one of them stumblingly, and he turned and moved to one side. He remembered having seen a dim shape off there that had made a straight slanting line. His searching hands encountered the object and kept him from walking into it.

The feeling of helplessness that drove him was only being increased by his blind and blundering movements. He told himself that he must wait.

Silently he stood where he had come to a stop, hands resting on the object that barred his way—until suddenly, stiflingly, his breath caught in his throat. Some emotion, almost too great to be borne, was suffocating him.

Slowly he moved his hands. Inch by inch he felt his way around the smooth cylinder, so hard, so coldly metallic. Then, with a rush, he let his hands follow up the slanting thing, up to a rounded top, to a heavy ring and a shackle that was on the end of a cable, thin and taut. And, while his hands explored it feverishly, the metal moved!

* * * * *

He clung to the smooth roundness as it slipped through his hands. It was the bailer, part of his own equipment. That slender cable reached up, straight up to the world he knew. And Smithy was there—Smithy was hoisting it!

He clung to the cylinder desperately. The bore, at this depth, had been reduced to eight inches; the bailer fitted it loosely. And Rawson cursed frantically the narrow space that would let this inanimate object return but would hold him back, while he wrapped his arms about the cold surface of the metal messenger from another world.

It lifted clear, then settled back. This time it dropped noisily to the floor. And suddenly Dean was tearing at the ring on one of the swollen fingers of his left hand.

It came free at last; it was in his hand as the cable tightened again. Swiftly, surely, he worked in the darkness to jam the ring through the shackle at the bailer's top. Then the bailer lifted, clanged loudly as it entered the shattered bore in the rocks above, and scraped noisily at the sides. The sound rose to a rasping shriek that went fainter and still fainter till it dwindled into silence.

But Dean Rawson, standing motionless in the darkness of that buried vault, dared once more to let himself think and feel as he stared blindly upward.

Up there Smithy was waiting. Smithy would know. And with Smithy fighting from the outside and he, Rawson, putting up a scrap below.... He smiled almost happily as his hand rested upon his gun.

Hopeless? Of course it was hopeless. No use of really kidding himself—he didn't have the chance of a pink-eyed rabbit.

But he was still smiling toward that dark roof overhead as the outlines of a metal door grew cherry red. They were coming for him! He was ready to meet whatever lay ahead....



CHAPTER IX

A Subterranean World

The metal plate that had sealed him in this tomb fell open with a crash. Beyond it the passageway was alive with crowding red figures. Above their heads the nozzles of a score of flame-throwers spat jets of green fire. Rawson drew back in sudden uncontrollable horror as they came crowding into the room.

The familiar feel of the bailer's cold metal had given him a momentary sense of oneness with his own world. Now this inrush of hideous, demoniac figures beneath the flare of green flames was like a fevered vision of the infernal regions come suddenly to actuality.

Rawson retreated to the shattered, rocky wall and prepared for one last fight, until he realized that the evil black eyes in their ghastly circles of white skin were fixed upon him more in curiosity than in active hatred.

They formed a semicircle about him—a wall of red bodies, whose pointed heads were craned forward, while an excited chatter in their broken, whistling speech filled the room with shrill clamor. Then one of them pointed above toward the open shaft that Rawson had drilled, the shaft up which the bailer had gone. And again their voices rose in weird discord, while their long arms waved, and red, lean-fingered hands pointed.

Only a moment of this, then one of them gave an order. Two of the red figures came toward Rawson where he was waiting. They were unarmed. They motioned that he was to go with them. And Dean, with a helpless shrug of his shoulders, allowed them, one on each side, to take him by the arms and hurry him through the open door. Two others went ahead, the green jets of flame from their weapons lighting the passage.

The system of communicating tunnels seemed at first only the vents and blow-holes from some previous volcanic activity. And yet, at times they gave place to more regular arrangement that plainly was artificial. The air in them was pure, though odorous with a pungent tang which Dean could not identify. Through some of the passages it blew gently with uncomfortable warmth.

The guard of wild red figures hurried him along through a vast world of caverns and winding passages which seemed one great mine. The richness of it was amazing. Dean Rawson was a man, a human being, facing death in some form which he could not yet know, and, so fast had his wild experiences crowded in upon him, he seemed numbed to all normal emotions; yet through it all the mind of the engineer was at work, and Dean's eyes were flashing from side to side, trying to see and understand the ever-changing panorama of a subterranean world.

* * * * *

Mole-men, both red and yellow, were everywhere. But it was apparent at a glance that the yellow giants were a race of toilers—slaves, driven by the reds.

Their great bodies glowed orange-colored with the reflected heat of the blasts of flame used to melt the metals from their ores. Gold and silver, other metals that Rawson could not distinguish in the half light—the glow of the molten stuff came from every distant cave that the passages opened up.

The sheer marvel of it overwhelmed him. His own danger, even the death that waited for him, were forgotten.

A world within a world—and who knew how far it extended? Mole-men, by scores and hundreds, the denizens of a great subterranean world, of which his own world had been in ignorance. Here was civilization of a sort, and now the barriers that had separated this world from the world above had been broken down; the two were united. Suddenly there came to Rawson's mind a flashing comprehension of a menace wild and terrible that had come with the breaking of those barriers.

They were passing through a wider hall when the whistling chatter of Dean's escort ceased. They were looking to one side where a cloud of smoke had rolled from a slope beyond. One of the red figures staggered, choking, from the cloud. Two yellow mole-men followed closely after.

The red mole-man was unarmed; each yellow one had a flame-thrower that was now so familiar a sight to Dean. His own escort was silent; they had halted, watching those others expectantly.

* * * * *

In the silence of that rocky room the single red one whistled an order. One of the two yellow men placed his weapon on the floor. Another shrill order followed, and the remaining worker, without a moment's hesitation, turned the green blast of his own projector upon his comrade.

It was done in a second—a second in which the giant's shriek ended in a flash of flame for which his own flesh was the fuel. A wisp of drifting smoke, and that was all. And the red creatures who had Rawson in their charge, after a moment of silence, filled the room with shrill-voiced pandemonium, while they shrieked their approval of the spectacle.

But Dean Rawson's lips were forming half-whispered words, so intently was he thinking the thoughts. "The damned red beast! That poor devil's flame hit some sulphur, I suppose—burned it to SO_2—then he got his!"

But, even while he searched his mind for words to describe the evil of this red race, he was realizing another fact. These yellow giants, countless thousands of them, perhaps, were held in subjection by their red masters. They would do as they were told. Dimly, vaguely, through his horrified mind, came the picture of a horde of red and yellow beasts turned loose upon the world above.

There were fears now which filled Dean Rawson, shook him with horrors as yet only half comprehended. But the fears were not for himself, one solitary man in the grip of these red beasts—he was fearing for all mankind.

* * * * *

His guard was hurrying him on, but now Dean hardly saw the scenes of feverish activity through which they passed. Another thought had come to him.

That shaft, the hole which he himself had drilled—what damage had it done? It was he who had broken down the barriers. His drill had told these beasts that there was other life above. It had guided them. They had realized that they were near to some other place where men worked and drove tunnels through the rocks. They had followed up these forgotten passages that led to the old craters, had ascended inside the volcano, made their way through the top and emerged into another world—a clean and sunlit world.

Now Rawson's eyes found with new understanding the activity about him.

The mining operations had been left behind. Here were branching passages, great cavelike rooms—a world within a world, in all truth. Throughout it, demoniac figures were hurrying, driving thousands of giant yellow slaves where the light shone sparkling from innumerable heaps of metal weapons—flame-throwers and others, the nature of which Rawson could not determine. And everywhere was the shouting and hurry as of a nation in the throes of war.

His speculations ended abruptly. They were approaching a room, a vast open place. High on the farther wall was a recess in the rock in which tongues of flame licked hungrily upward. The heat of the fires struck down in a ceaseless hot blast. Close to the fires, unmindful of the heat, a barbaric figure assumed grotesque and horrible postures, while its voice rose in echoing shrillness.

Below were crowding red ones who prostrated themselves on the rocky floor.

"Fire worshipers!" The explanatory thought flashed through Dean Rawson's mind. "Here was one of their holy places, a place of sacrifice, perhaps, and he was being taken there, helpless, a captive!"



CHAPTER X

Plumb Loco

The sheriff of Cocos County was reacting exactly as Rawson had anticipated. Smithy stood before him, a disheveled Smithy, grimy of face and hands. He had made his way to the highway and caught a ride to the nearest town, and now that he had found Jack Downer, sheriff, that gentleman leaned back in his old chair behind the battered desk and regarded the younger man with amused tolerance.

"Now, that's right interesting, what you say," he admitted. "Tonah Basin, and the old crater, and red devils settin' fire to everything. I've heard some wild ones since this Prohibition went into effect and some of the boys started makin' their own, but yours sure beats 'em all. Guess likely I'll have to take a run up Tonah way and see what kind of cactus liquor they're makin'."

"Meaning I'm drunk or a liar." Smithy's voice was hot with sudden anger, but the sheriff regarded him imperturbably.

"Well, I'd let you off on one count, son. You do look sort of sober."

Smithy disregarded the plain implication and fought down the anger that possessed him.

"May I use your phone, Mr. Downer?" he asked.

He called the office of Erickson and his associates in Los Angeles and told, as well as he could for the constant interruptions from his listener, the story of what had occurred. And Mr. Erickson at the other end of the line, although he used different words, gave somewhat the same reply as had the sheriff.

"I refuse to listen to any more such wild talk," he said. "If our property has been destroyed, as you say, there will be an accounting, you may be sure of that. And now, Mr. Smith, get this straight, you tell Rawson, wherever he is hiding, to come and see me at once."

"But I tell you he has been captured," said Smithy desperately. "He's gone."

"I rather think we will find him," was the reply. "He had better come of his own accord. His connection with us will be severed and all drilling operations in Tonah Basin will be discontinued, but Mr. Rawson will find that his responsibility is not so easily evaded."

The sheriff could not have failed to realize the unsatisfactory nature of the conversation; he must have wondered at the satisfied grin that spread across Smithy's tired face.

"Do you mean you're through?" he demanded. "You're abandoning Rawson's work?"

"Exactly," was Mr. Erickson's crisp response.

* * * * *

Smithy, as the telephone clicked in his ear, turned again to the sheriff. "That unties my hands," he said cryptically. "One more call, if you please."

Then to the operator: "Get me the offices of the Mountain Power and Lighting Corporation in San Francisco. I will talk with the president."

The sheriff of Cocos County chuckled audibly. "You'll talk to the president's sixteenth assistant secretary, son," he told Smithy. "And I take back what I said before—now I know you're plumb loco. By the way, son, it costs money for telephone calls like that. I hope you ain't, by any chance, overlookin'—"

But Smithy was speaking into the telephone unmindful of the sheriff's remarks.

"Is Mr. Smith in his office?" he was inquiring. "Yes, President Smith.... Would you connect me with him at once, please? This is Gordon Smith talking."

"Hello, Dad," he said a moment later. "Yes, that's right. It's the prodigal himself. Now, listen, Dad, here's something important. Can you meet me in Sacramento and arrange for us to see the Governor—get his private, confidential ear? I'll beat it for Los Angeles—charter the fastest plane they've got...."

There was more to the conversation, much more, although Smithy refrained from giving details over the phone. An operator was breaking in on the conversation as he was about to hang up.

"Emergency call," the young woman's voice was saying. "We must have the line at once."

* * * * *

Smithy handed the telephone to the sheriff. "Someone's anxious to talk to you," he said. He searched his pockets hurriedly, found a ten-dollar bill which he laid on the sheriff's desk. "That will cover it," he said with a new note in his voice. "Perhaps you're not just the man for this job, sheriff. It's going to be a whole lot too hot for you to handle."

He had turned quickly toward the door, but something in the sheriff's excited voice checked him. "Burned? Wiped out, you say?"

Halfway across the room Smithy could hear another hoarse voice in the telephone. The sheriff repeated the words. "Red devils! They wasn't Injuns? The whole town of Seven Palms destroyed!"

"I thought," said Smithy softly to himself, "that we'd have to go down there to find them, and instead they're out looking for us. Yes, I think this will be decidedly too hot for you to handle, sheriff." He turned and bolted out the door.

* * * * *

An attentive audience was awaiting Gordon Smith on his arrival in Sacramento. Smithy's father was not one to be kept waiting even by the Governor of the state. Also, Smithy was coming from the Tonah Basin region, and the news of the destruction of the desert town of Seven Palms had preceded him. Even the swift planes of the Coastal Service could not match the speed of the radio news.

There were only two men in the room when Smithy entered. One of them, tall, heavily built, as square-shouldered as Smithy, came forward and put his two hands on the young man's shoulders. Their greetings were brief.

"Well, son?" asked the older man, and packed a world of questioning into the interrogation.

"O. K., Dad," said Smithy simply.

His father nodded silently and turned to the other man. "Governor, my son, Gordon. He got tired of being known as the 'Old Man's son'—started out on his own—not looking for adventure exactly, but I judge he has found it. He's got something to tell us."

And again Smithy told his wild, unbelievable tale. But it was not so incredible now, for, even while Smithy was talking, the Governor was glancing at the report on his desk which told of the destruction of the little town of Seven Palms.

"I can't tell you what it means," Smithy concluded. He paused before venturing a prediction which was to prove remarkably accurate. "But I saw them—I saw them come up out of the earth, and I'm betting there are plenty more where they came from. And now that they've found their way out, we've got a scrap on our hands. And don't think they're not fighters, either. They're armed—those flame-throwers are nothing we can laugh off, and what else they've got, we don't know."

He leaned forward earnestly across the Governor's desk. "But that's your job," he said. "Mine is to find Dean Rawson. He's alive, or he was. He sent up his ring as proof of it. I've got to find him—I've got to go down in that pit and I want your help."



CHAPTER XI

The White-Hot Pit

How far his guard of wild, red man-things had taken him Dean Rawson could not know. Many miles, it must have been. And he knew that the air had grown steadily more stiflingly hot. But the heat of those long tunneled passages was like a cool breeze compared with the blasting breath of the room into which he was plunged.

It seared his eyeballs; it struck down from the tongues of flame that played in red fury in the recess high up on the farther wall. And the vast room, the fires, the hundreds of kneeling figures, all blurred and swam dizzily before him.

The hot air that he breathed seemed crisping his lungs. Vaguely, for the stupefying, brain-numbing heat, he wondered at the figure he saw dimly in its grotesque posturing close to the flames. And the hundreds of others—how could they live? How could he himself go on living in this inferno?

They had been chanting in unison, the kneeling red ones. Dean heard the regular beat of their repeated words change to an uproar of shrill, whistling voices. But he could neither see nor hear plainly for the unbearable, suffocating heat.

The clamor was deafening, confusing; it echoed tremendously in the rocky room and mingled with the steady, continuous roar of the flames. The mass of bodies that surged about him made only a blurring impression; he tried to make himself see clearly. He must fight—fight to the last! Only this thought persisted. He was striking out blindly when he knew that his red guard had cleared a way through the mob and was dragging him forward.

He knew when they reached the farther wall. Somewhere above him was the deep-cut niche in which the fires roared. And then, when again he could see from his tortured eyes, he found directly ahead another doorway in the solid rock. Beyond it all was black; it gave promise of coolness, of relief from the stifling air of the room. Red hands were thrusting him through.

The burst of water, icy cold, that descended upon him from above shocked him from the stupor that claimed his senses. He was drenched in an instant, strangling and gasping for breath. But he could think! And, as the lean hands seized him again and hurried him forward, he almost dared to hope.

* * * * *

To his eyes the passageway was a place of utter darkness, but the red ones, their great owl eyes opened wide, hurried him on. His stumbling feet encountered a flight of steps. With the red guard he climbed a winding stair where the tunnel twisted upward.

That icy deluge had set every nerve aquiver with new life. He hardly dared ask himself what might lie ahead. Yet he had been saved from that mob; it might be his life would be spared, that in some way he could learn to communicate with these people, learn more of this subterranean world—which must be of tremendous extent. Without any sure knowledge of their plans, he still was certain in his own mind that they intended to swarm out upon the upper world. He might even be able to show them the folly of that.

A thousand thoughts were flashing through his mind when the tunnel ended. Beyond a square-cut opening the air was aglow with red. An ominous thunder was in his ears. Then a score of hands lifted him bodily and threw him out upon a rocky floor that burned his hands as he fell.

Heat, blistering, unbearable, beat upon him. He was wrapped in quick-rising clouds of steam from his wet clothes.

The platform ended. Far below was a sea of red faces, grotesque and horrible, where each held two ghastly white disks, and at the center of each disk a mere pinpoint eye.

He saw it all in the instant of his falling—the inhuman, shrieking mob, the blast of hot flame not forty feet away at the back of the rocky niche, and, between himself and the flame, a giant figure that leaped exultantly, while its body, that appeared carved from metallic copper, reflected the red fires until it seemed itself aflame.

* * * * *

Dean knew in the fraction of a second while he scrambled to his feet, that the great room had gone silent. The roaring of the flames ceased; even the clamor of shrill voices was stilled. He had thrown one arm across his face to shield his eyes; the heat still poured upon him like liquid fire. But his instant decision to throw himself out and down into the waiting mob was checked by the sudden stillness.

To open his eyes wide meant impossible torture, yet he forced himself to peer through slitted lids beneath the shelter of his arm.

The flame was gone. Where it had been was a wall of shimmering red rock above a gaping throat in the floor, whose rim was quivering white with heat. Here the blast from some volcanic depth had come.

Then he saw it, saw the great coppery figure leaping upon him—and saw more plainly than all this the end that had been prepared for him.

Fire worshipers! Demons of an under world paying tribute to their god. And he, Dean Rawson, was to be a living sacrifice, cast headlong to that waiting, white-hot throat!

The coppery giant was upon him in the instant of his realization. Somehow in that moment Dean Rawson's wracked body passed beyond all pain. With the inhuman, maniacal strength of a man driven beyond all reason and restraint he tore himself half free from those encircling arms and drove blow after blow into the hideous face above him.

Only his left arm was free. That, too, was clamped tightly against his body an instant later.

* * * * *

The giant had been between him and the glowing rocks. Now he felt himself whirled in air, and again the blast of heat struck upon him. He was being rushed backward; and there flashed through his mind, as plainly as if he could actually see it, the scintillant whiteness of that hungry throat.

He tried to lock his legs about the big body to prevent that final heave and throw that would end a ghastly ceremony. The rocks were close, their radiant heat wrapped about him like a living flame. Abruptly his strength was gone—the fight was over—he had lost! His heart sent the blood pounding and thundering to his brain; his lungs seemed on fire.

* * * * *

The high priest of the red ones had his priestly duty to perform—the sacrifice must be offered. But even the high priest, it would seem, must have been not above personal resentment. Sacrilege had been done—a fist had smashed again and again into the holy one's face. This it must have been that made him pause, that brought one big hand up in a grip of animal rage about Dean's throat.

Only a moment—a matter of seconds—while he vented his fury upon this white-skinned man who had dared to oppose him. Dean felt the hand close about his throat. So limp he was, so drained of strength, he made no effort to tear it loose. He was dead—what mattered a few seconds more or less of life? And then a thrill shot through him as he knew his right hand was free.

That hand made fumbling work of drawing a gun from its smoking, leather holster. He could hardly control the numbed, blistered fingers, yet somehow he crooked one about the trigger; and dimly, as from some great distance, he heard the roar of the forty-five.... Then, from some deep recess within him, he summoned one last ounce of strength that threw him clear of the falling body.

Instinctively he had heaved himself away from the fiery rocks; the same effort had sent his big coppery antagonist staggering, stumbling, backward. And Dean, sprawled on the stone floor, whose heat where he lay was just short of redness, heard one long, despairing shriek as the giant figure wavered, hung in air for a moment in black outline against the fierce red of a rocky wall above a white-hot pit, then toppled, pitched forward, and vanished.

Sick and giddy, he forced himself to draw his body up on hands and knees. Then he straightened, came to his feet, and staggered forward.

* * * * *

Below him was pandemonium. The sea of faces wavered and blurred before his eyes. From a distant archway other figures were coming. He saw the gleam of metal, heard the wild blare of trumpets, and knew that the hundreds of red ones below him were standing stiffly, both hands raised upright in salute as another barbaric figure entered. The air was clamorous with a shrill repeated call. "Phee-e-al!" the red ones shrieked. "Phee-e-al!"

But Rawson did not wait to see more. Behind him, the flames that had been fed with human flesh—if indeed these red ones were human—roared again into life. He had returned the pistol to its holster when first he came to his feet; his weak hands had seemed unable to hold it. And now his two hands were thrust outward before him as he staggered blindly toward the tunnel mouth.

It was where he had emerged upon the platform. His reaching hands found the side entrance where the stairs led down to the main hall. In the darkness he made his way past. Stumbling weakly he pushed on down the long tunnel whose floor slanted gently away.

Ahead of him was a light. The comparative coolness of these rocks had served to revive him somewhat. He had no hope of escape, yet the light seemed comforting, somehow.

He stopped. His stinging eyes were wide open. He stared incredulously at the glowing spot on a distant wall, where a flame must have touched, and at the figure beneath it.

The figure of a woman! A young woman, tall, slender, fair-haired, whose skin was white, a creamy white, whiter than snow.

A woman? It was a mere girl, slender and beautiful, her graceful young body poised as if, in quick flight, she had been caught and held for a moment of stillness.

What was she doing here? His exhausted brain could not comprehend what it meant. He had seen women of the Mole-men tribe mingling with the men. Like them their heads were pointed, their faces grotesque and hideous. Rawson gave an inarticulate cry of amazement and staggered forward.

Between him and the distant figure a crowd of Reds swarmed in. They came from a connecting passage. Above their heads the lava tips of flame-throwers were spitting jets of green fire. Every face was turned toward him at his cry.

Beyond them the white figure vanished. Dean, leaning weakly against the wall, told himself dully that it had been a phantom, a product of his own despairing brain and his own weakness. Then that weakness overcame him; and the red Mole-men, their white and hideous eyes, the threatening jets of green flame, all vanished in the quick darkness that swept over him....



CHAPTER XII

Dreams

The black curtain of unconsciousness which descended so quickly upon Rawson was not easily thrown off. For hours, days or weeks—he never knew how long he lay in the citadel of the Reds—it was to wrap him around.

Nor was his waking a matter of a moment. Many and varied were the impressions which came to him in times of semiconsciousness, and which of them were realities and which dreams, he could not tell.

He was being tortured with knives, lances tipped with pain that dragged him up from the black depths in which he lay. Dimly he realized that his clothes were being stripped from him and that the piercing knives were none the less real for being only the touch of hands and rough cloth upon his blistered body. Then from head to foot he was coated with a substance cool and moist. The pain died to a mere throbbing and again he felt himself sinking back into unconsciousness.

There were other visions, many others, some of them plain and distinct, some blurred and terrifying to his fevered brain trying vainly to bring order and reason into what was utterly chaotic.

Once a bedlam of shrieking voices roused him. He tried to open his eyes, whose lids were too heavy for his strength. And by that he knew he was dreaming. Yet from under those lowered lids he seemed to see a wild medley of red warriors, their faces blotched and ghastly in the green light of their weapons. They were carrying a charred body which they threw heavily upon the floor beside him as if to compare the two. He saw the face which the flames had not touched, the face of Jack Downer—Downer, the sheriff of Cocos County. His sandy hair had been scorched to the scalp.

Dreams ... and the steady beat of metal-shod feet of marching men. He saw them passing some distance away. The repeated thud-thud of metal on stone echoed maddeningly through his brain for hours.... Dreams, all of them.

And once there came to him a vision which beyond all doubt was unreal.

* * * * *

Silence had surrounded him. For what seemed hours not one of the red mole-men had come near. And then, in the silence, he heard whisperings and the sound of stealthy feet; and, for a moment, the same white figure that had met him in his flight stood where he could see.

Only the merest trace of dim light relieved the utter darkness of the room. The girl's figure was ghostly, unreal. Yet he saw the dull sparkle of jeweled breast-plates against her creamy white skin. Loose folds of cloth were gathered about her waist; her golden hair was drawn back except for vagrant curls that only accentuated the perfect oval of her face.

There were others with her, dim shapes of men; how many Rawson could not tell. They looked down at him, whispering softly, excitedly, amongst themselves; but their words were like nothing he had ever heard.

For an instant Dean felt his stupefied mind coming almost to wakefulness. Phantom figures, ghostly and unreal—but the faces were human, and the eyes looked down upon him pityingly. He tried to rouse himself, tried to call out, then settled limply back, for the girl was speaking—or he was catching her thoughts. It seemed almost that he heard her whispered words:

"They take him to Gevarro, to the Lake of Fire which never dies! Gor told me—he overheard their plans. But, by the Mountain I swear...." Then footsteps echoed in a far-off passage, and the white ones vanished like drifting smoke.

Dreams, all of them. Yet the time came when Dean knew that he was awake—knew too that further experiences awaited him in this demoniac land.

* * * * *

Again red guards came. The wicked breath of their weapons filled the great room where Rawson had been with green, flickering light. Dean, dragged to his feet, was unable to stand. One of the giant yellow workers came forward at a whistled order and held him erect. Another brought a bowl carved from rock crystal and filled with a liquid golden-green with reflected light. He put it to Rawson's lips and with the first touch Dean knew that he must have been filled with a burning thirst beyond anything he had ever known. He gulped greedily at the liquid, drained the bowl to the last drop, then marveled at the thrilling fire of strength that flowed through him.

"Wine," he thought, "wine of the gods—or devils." He came to himself with a start. He knew that he was naked and that his body was encased in a coating of stiff gray plaster. It was this that prevented his arms and legs from flexing.

Another order and the giant worker picked him up in his arms and carried him where the others led to a distant room. A stream trickled through a cut in the rocky floor. At the center of the room was a pool. Unable to resist, Dean felt the giant arms toss him out and down.

The water was warm. At its first touch the hard plaster melted like snow. Sputtering and choking for breath, Rawson came to the surface. He found he could move freely, then reaching hands hauled him out upon the floor, and through all his dread he found time to marvel at his own firm muscles and the healthy white of his skin that had been seared and blistered.

He obeyed when the red guards pointed and motioned him into a dark passageway. He tried to keep up with them as they hurried him on. Evidently his pace was too slow, for again the big worker picked him up, swung him into the air and seated him firmly on one broad shoulder, and, with red guards ahead and behind them, hurried on.

To find himself a child in the hands of this big yellow man was disconcerting. To be calmly lugged off was almost humiliating. No one who was not a good sport could have grinned as Rawson did at his own predicament.

"Not exactly a triumphal procession," he told himself, then his lips set grimly. "They've got my gun," he thought, "and now, whatever comes, all I can do is stand and take it. Still, they've saved my life. But what for?"

* * * * *

Always the way led downward, and Rawson, perched on his strange, half-human steed, let his gaze follow up every branching tunnel and widespread cave. Not all of these were as dark as the broad thoroughfare they followed. In some, strange lights glowed, and Rawson saw weird, towering plant growths that yellow workers were harvesting.

Life, life, everywhere, and seemingly this underground world was endless.

Troops of red warriors passed them, upward bound. The dancing flames of their weapons, where occasional ones were in action, glowed from afar. They bobbed and waved like green fireflies as the Mole-men came on at a half-run.

"And this means trouble up top," he thought. "There's going to be hell to pay up there."

But workers, fighters, everyone they met stood aside to let the red guard pass. Again Rawson heard the strange word or call that had come to him in the temple of fire. One of the guides would give a whistling call that ended in the same strange shrill cry of "Phee-e-al," and instantly the way was cleared.

A wild journey, incredible, unreal. Rawson, as he met the countless staring white eyes of the creatures they passed, found his thoughts wandering. He had had wild dreams. Surely this was only another in that succession of phantom pictures. Then, seeing the cold, implacable hatred in those staring eyes, he would be brought back with sickening abruptness to a full knowledge of his own hopeless situation.

"Gevarro, the lake of fire which never dies"—what was it the white ones had said? But no, that certainly was a dream like that other in which he had seemed to see the charred body of a man, the sheriff who had called to see him at his camp in Tonah Basin.

Dreams—reality—his brain was confused with the wild kaleidoscope of unbelievable pictures.

* * * * *

He was suddenly aware that through it all he had been mentally tabulating their route, remembering the outstanding features when there was light enough to see. He knew that unconsciously his mind had been thinking of escape. Wilder than all the other visions, he had been picturing himself retracing his route, alone, free. He did not know that he had laughed aloud, harshly, hopelessly, until he saw the curious eyes of his red guard upon him.

"Yes," he told himself in silent bitterness, "I could find my way back, if...."

The guard had swung off from the great tunnel which must have been one of the main thoroughfares of the Mole-men's world. They crowded through a narrower passage and again Rawson found himself in one of the great, high-ceilinged caves like the others he had seen. But unlike the others this was brightly lighted.

Massive limestone formation. His eyes squinted against the glare and caught the character of the rock before he was able to distinguish details, and in the black limestone big disks of gray mineral had been set. Jets of flame played upon them and turned them to blazing, brilliant white.

The big yellow Mole-man who had carried him dropped him roughly to the floor and backed away. About him the red guard was grouped. Rawson caught a glimpse of hundreds of other thronging figures. The crowd about him separated. A space was cleared between him and the farther end of the room, a lane lined on either side by solid masses of savage Reds. And beyond them, more barbaric than any figure in the foreground, was another group.

* * * * *

Across the full width of the room a low wall was raised three or four feet from the floor. It was capped with rude carvings. The whole mass gleamed dully golden in the bright light. Beyond the wall in semicircular formation, resembling a grouping of bronze statues, were men like the one with whom Rawson had fought. Priests, tenders of the fires. He knew in an instant that here were more of the red one's holy men. They stood erect, unmoving. At their center was another seated man-shape that might have been cast from solid gold.

His naked body was yellow and glittering, contrasting strongly with the black metal straps like those the warriors wore. On his head a round, sharply-pointed cap was ablaze with precious stones.

Rawson took it all in in one quick glance. He knew that those copper bodies were not encased in metal, for the flesh of the one he had fought with had sunk under his blows. Their skin was coated with a preparation, heat resistant without a doubt, and the golden one must have been treated in somewhat the same way.

His thoughts flashed quickly over this. It was the face of that seated figure that riveted his attention, a white face, milk-white, so white it seemed almost chalky!

* * * * *

For one breathless second Rawson was filled with a wordless hope. Those white ones of his dream had looked upon him with kindly eyes. They were human—men of another race, but men. Then beneath the chalky whiteness of the face he found the hideous features of the red Mole-men, and knew that the white color of the face was as false as that of the golden body.

But he was their leader. He was someone of importance. Rawson had started forward impetuously when he saw the figure rise. At the first motion the hands of every red one in the room were flung in air. They stood stiffly at salute. Even the priests' coppery arms flashed upward. And "Phee-e-al!" a thousand shrill voices were shouting. "Phee-e-al! Phee-e-al!"

Rawson stopped, then walked slowly forward, one defenseless, naked man of the upper world, between two living walls formed by men of a hidden race.

"Phee-e-al," he was thinking. "He's the one I saw coming into their temple back there. They got out of our way when they knew we were coming to see him. He's the big boss here, all right."

He did not pause in his steady, forward progress until his hands were resting upon the golden barrier. Strange thoughts were racing through his mind. Phee-e-al, he was facing Phee-e-al, king of a kingdom ten miles or more beneath the surface of the earth, a place of devils more real and terrible than any that mythology had dared depict. And he, Dean Rawson, a man, just one of the millions like him up there in a sane, civilized world, was down here, standing at a barrier of gold before a tribunal that knew nothing of justice or mercy.

* * * * *

Thoughts of communicating with them had mingled with other half-formed plans in his racing mind. Sign language—he had talked with the Indians; he might be able to get some ideas across. He met the other's fierce scrutiny fearlessly, then, waiting for him to make the first advance, let his gaze dart about at closer range. He could not restrain a start of surprise at sight of his own clothing, his pocket radio receiver and his pistol spread out on a metal stand.

They had been curious about them. Rawson took that as a good sign. Perhaps he had been mistaken in his interpretation of what he had seen. For himself, he could have no real hope, but it might be that the outpouring of these demons into his own world was a threat that lay only in his own imagination.

His eyes came back to meet that gaze which had never left him. The eyes were mere dots of jet in a white and repulsive face. The rounded mouth opened to emit a shrill whistled order.

In the utter silence of the great room one of the copper-skinned priests moved swiftly toward the rear. There were chests there, massive metal things afire with the brilliance of inlaid jewels. The priest flung one of them open with a resounding clang.

The room had been warm, and the chill which abruptly froze Rawson's muscles to hard rigidity came from within himself. Dreams! He had thought them dreams, those marching thousands, and the others who returned. He had dared to hope he might avert an invasion by this inhuman horde.

And now he knew his worst imaginings were far short of the truth. He saw clearly his own fate. For the priest returning was holding an object aloft, a horrible thing, a naked body, scorched and charred. And above it a head lopped awkwardly. The hair was sandy; half of it had been burned to the scalp in a withering flame. Below, staring from sightless eyes, was the face of the man who had once been sheriff of Cocos County.



CHAPTER XIII

"N-73 Clear!"

"You fly, of course?" demanded Governor Drake.

Smithy nodded. "Unlimited license—all levels."

They had spent the night in the executive mansion, and now the Governor had burst precipitately into the room where Smithy and his father had just finished dressing. The two had been deep in an earnest conversation which the Governor's entrance had interrupted.

"I am drafting you for service," said the Governor. "I want you to go out to Field Number Three. A fast scout plane—National Guard equipment—will be ready for you—"

He broke off and stared doubtfully at a paper in his hand, a radiophone message, Smithy judged. "I'm in a devil of a fix," the Governor exclaimed, after a pause. Then:

"I don't doubt your sincerity," he told Smithy. "Never saw you till yesterday, but your father's 'O.K.' goes a hundred per cent with me. Old 'J. G.' and I have been through a lot of scraps together." His frowning eyes relaxed for a moment to exchange twinkling glances with the older man.

"No, it isn't that," he added, "but...." Again he stared at the flimsy piece of paper.

"What's on your mind, Bill?" asked Smith senior. "That stuff the boy told us was pretty wild"—he laid one hand affectionately upon Smithy's shoulder—"but he's a poor liar, Gordon is, and, knowing his weakness, he usually sticks to the truth. And there's no record of insanity in the family, you know. If there's something sticking in your crop, Bill, cough it up."

And the Honorable William B. Drake obeyed. "Listen to this," he commanded, and read from the paper in his hand:

"'Replying to your inquiry about the doings at Seven Palms. Some Indians did that job. No help needed. I can handle this. Posse organized and we are leaving right now.—Signed, Jack Downer, Sheriff, Cocos County.'"

"That sounds authentic," said Smithy drily. "I've met the sheriff."

"Now, if it was Indians that got tanked up and came down off the reservation, burned Seven Palms and cleaned up your camp—" began Governor Drake.

"It wasn't!" Smithy interrupted hotly. "I told you—" He felt his father's hand gripping firmly at his shoulder.

"Steady," said Smith, senior. "Let him talk, son."

"There's an election three months from now, J. G.," said the Governor, "and you know they're riding me hard. Let me make one false move—just one—anything that the opposition can use for a campaign of ridicule, and my goose is cooked to a turn."

* * * * *

Gordon Smith shook off his father's restraining hand and took one quick forward step. His face, even through the tan of the desert sun, was unnaturally pale.

"Election be dammed!" he exploded. "Dean Rawson has been captured by those red devils—he's down there, the whitest white man I ever met! I've been to the sheriff; now I've come to you! Do you mean to tell me there isn't any power in this state to back me up when—"

He stopped. There was a tremble in his voice he could not control.

"Good boy," said Governor Drake softly. "Now I know it's the truth. Yes, you'll be backed up, plenty, but for the present it will be strictly unofficial. Now pull in your horns and listen.

"You know the lay of the land. I want your help. Go out to Field Three; there'll be a man there waiting for you. Don't call him 'Colonel'—he's also strictly unofficial to-day. The sheriff and his posse will be there at Seven Palms inside an hour; I want you to be there, too, about five thousand feet up.

"Tell Colonel Culver—I mean Mr. Culver—your story; tell him everything you know. He'll be in charge of operations if we have to send in troops; he'll give you that private and unofficial backing I spoke of if we don't.

"Now get down there; keep your eye on the sheriff's crowd and see everything that happens!"

But Smithy's parting remark was to his father; it was a continuation of the subject they had been discussing before.

"You can buy at your own price," he said. "They've got rights to the whole basin. But they've quit; I'm not treating them to a double-cross."

And he added as he went out of the room: "Buy it for me if you don't want it yourself."

* * * * *

It was a two-place, open-cockpit plane that Smithy found had been set aside for him. Dual control—the stick in the forward cockpit carried the firing grip that controlled the slim blue machine guns firing through the propeller. Behind the rear cockpit a strange, unwieldy, double-ended weapon was recessed and streamlined into the fuselage. The scout seemed quite able to protect itself in an emergency.

Beside the plane a tall, slender man in civilian attire was waiting. He stuck out his hand, while the gray eyes in his lean, tanned face scanned Smithy swiftly.

"I'm Culver. Understand I'm to be your passenger to-day. How about it—can you fly the ship? Seven hundred and fifty DeGrosse motor—retractable landing gear, of course. She hits four-fifty at top speed—snappy—quick on the trigger."

Smithy shook his head dubiously. "Four-fifty—I'm not accustomed to that. But you can take the stick, Mr. Culver, if I get in a hurry and jump out and run on ahead. You see I'm used to my own ship, an Assegai—special job—does five hundred when I'm pressed for time."

The lean face of Mr. Culver creased into a smile. "You qualify," he said. "But keep your hands off the dead mule."

At an inquiring glance he pointed to the heavy, half-hidden weapon that Smithy had noticed. "Can't kick," he explained, "—hence 'dead mule.' It's the new Rickert recoilless; throws little shells the size of your thumb—but they raise hell when they hit."

"Sounds interesting." Smithy climbed into the rear cockpit and strapped himself in. "Show me how it works, then I won't do it."

* * * * *

A pistol grip moved under Culver's reaching hand and the strange weapon sprang from concealment like something alive. The pistol grip moved sideways, and the gun swung out and down, its muzzle almost touching the ground. Smithy was suddenly aware that a crystal above his instrument board was reflecting that same bit of sun-baked earth. A dot of black hung stationary at the crystal's center.

"That's your target." Culver's voice held all the pride of a child with a new toy, but he released the grip, and the ungainly gun swung smoothly back to its hiding place.

He settled himself in the forward cockpit. "You will find a helmet there," he said. "It's phone-equipped; you can tell me all about that wild nightmare of yours while we jog along."

The white beam from the despatcher's tower had been on them while they talked. Other planes were waiting on the field. Smithy smiled as he settled the helmet over his head. "For a strictly unofficial flight," he thought, "we're getting darned good service."

He taxied past a hangar where uniformed men pointedly paid them no attention. He swung the ship to the line as Airboard regulations required.

"N-73" was painted on the monoplane's low wings that seemed scraping the ground. "N-73 Clear!" the despatcher's voice radioed into Smithy's ears. Then the seven-hundred-and-fifty-horsepower DeGrosse let loose its voice as Smithy gunned her down the field.

* * * * *

Whatever doubts Colonel Culver may have had of Smithy's ability were dissipated as they made their way cautiously through the free-flying area under five thousand. Everywhere were mail planes, express and passenger ships taking off for the transcontinental day run, and private planes scattering to the smaller landing areas among the flashing lights of the flat-topped business blocks. Among them Smithy threaded his way toward the green-lighted transfer zone, where he spiraled upward.

At ten thousand he was on his course. He set the gyro-control which would fly the ship more surely than any human hands, and the air-speed indicator crept up to the four hundred and fifty miles an hour that Culver had promised. Not till then did he give the man in the forward cockpit the details of his "nightmare."

He had not finished answering the other's incredulous questions when he throttled down to slow cruising speed and nosed the ship toward a distant expanse of sage-blurred sand.

Outside the restricted metropolitan area he had already dropped out of the chill wind that struck them at ten thousand. Behind them and off to the right was the gray rampart of the Sierra. Ahead a rough circle of darker hills enclosed the great bowl he had learned to know as Tonah Basin.

* * * * *

Some feeling of unreality in his own experiences must have crept into his mind; unconsciously he had been questioning his own sanity. Now, at sight of the sandy waste where he and Rawson had labored, with the dark slopes of desolate craters looming ahead and a blot of burned wreckage directly below to mark the site of their camp, the horrible reality of it gripped him again.

He could not speak at first. The air of the five-thousand level was not uncomfortably warm, but Smithy was feeling again the baking heat of that desert land; again he was with Rawson in the volcanic crater; Dean was calling to him, warning him....

A sharp question from Culver was repeated twice before Smithy could reply.

He side-slipped in above the crater's ragged rim, heedless of down-drafts—the power of the DeGrosse motor would pull them out of anything in a ten-thousand-foot vertical climb if need arose. Smithy was pointing toward a confusion of shining black rock.

"Over there," he told Culver. Then he was shouting into the telephone transmitter. "It's open," he said. "That's where Dean went down—and there they are! Look, man, there—there!"



CHAPTER XIV

Emergency Order

The throat of the old volcano was a pit of blackness in the midst of gray ash and the red-yellow of cinders. Beside it were other flecks of color: red, moving bodies; metal, that twinkled brightly under the desert sun—and in an instant they were gone. Nor did Smithy, throwing the thundering plane close over that place, know how near he had passed to sudden, invisible death. Rugged pinnacles of rock were ahead. The plane under Smithy's hands vaulted over them and roared on above the desert.

"Did you see them?" Smithy was shouting.

The man in the forward cockpit turned to face his pilot. "I am apologizing, Smith, for all the things I have been thinking and haven't said. We've got a job on our hands. Now let's find that fool sheriff who thinks he's hunting for drunken Indians. We must warn him."

Smithy wondered at the wisps of blue smoke still rising from the ruins of Seven Palms as he drove in above it. It seemed years since he had left the Basin, yet the wreckage of this little town, only five miles outside, still smoldered.

Colonel Culver was shouting to him. "East," he said. "Swing east. There's fighting over there." Then, in his usual cool tone: "I'll take the ship, Smith. Give then a burst or two from up here—perhaps the sheriff can use a little help."

Across the yellow sand ran a desert road. Ten miles away black smoke clouds were lifting. Smithy knew there had been a little settlement there. A dozen houses, perhaps, and a gasoline station. At half that distance the clear sunlight showed moving objects on the sand: automobiles, smaller dots that were running them. They came suddenly to sharp visibility as the plane drew near. Tiny bursts of white meant rifle fire.

They were a thousand feet up and close when Smithy saw the first car vanish in flame. Others followed swiftly. Men were falling. A dozen of them had made up the sheriff's posse, and now, like the cars, they, too, burst into flame and either vanished utterly or, like living torches, were cast down upon the sand.

Still no sign of the enemy, more than the ripping stab of green fire from a sand dune at one side. They were over and past before Smithy, looking back, saw the red ones leap out into view.

* * * * *

Culver must have seen them in the same instant. He throttled down to a safe banking speed. Opened full, the DeGrosse would have whipped them around in a turn that would have meant instant death. From five miles distant they shot in on a long slant. Smithy's hands were off the stick. It was Culver's ship now.

He saw the man peering through his sights, then the roar of the motor held other, sharper sounds. Thin flames were stabbing through the propeller disk, and he knew that the bow guns were sending messengers on ahead where red figures waited on the sand.

Their trajectory flattened. Culver half rolled the ship as they sped overhead. "He wants a look at them," Smithy was thinking. Then a blast of heat struck him full in the face.

It was Smithy's hand on the stick that righted the ship; only the instant response of the big DeGrosse motor tore them up and away from the sands that were reaching for those wings.

His face was seared, but the pain of it was forgotten in the knowledge that their drunken, twisting flight had whipped out the fire licking back from the forward cockpit. He saw Culver's head, fallen awkwardly to one side. The helmet in one part was charred to a crisp.

He leveled off. He was thinking: "Another man gone! Can't I ever fight back? If I only had a gun!" Then he knew he was looking at the pistol grip, where Colonel Culver's brown hand had brought an awkward weapon to life. His lips twisted to a whimsical smile, though his eyes still held the same cold fury, as he whispered: "And I don't even know that the damn thing's loaded—but I'm going to find out!"

* * * * *

They were clustered on the sands below him as he roared overhead. He was flying at two thousand, the throttle open full. Beside the ship a gun swung its long barrel downward. It sputtered almost soundlessly—but where it passed, the sand rose up in spouting fountains.

But his wild speed made the gunfire almost useless. The shell-bursts were spaced too far apart; they straddled the blot of figures.

He came back at five thousand feet, slowly—until the ship lurched, and he saw the right wing tip vanish in a shower of molten metal. He threw the ship over and away from the invisible beam; the plane writhed and twisted across the last half mile of sky. He was over them when he pulled into a tight spiral, then he swung the pistol grip that controlled the gun until the dot in the crystal was merged with the target of clustering red forms. The gun sputtered.

Below the plane, the quiet desert heaved its smooth surface convulsively into the air. Even above the roar of the motor Smithy heard the terrific thunder of that one long explosion.

Above the rim of the forward cockpit Culver's head rolled uneasily; his voice, thick and uncertain, came back through the phone; and later—only a matter of minutes later, though fifty miles away—Smithy set the plane down on a level expanse of sand and tore frantically at his belt. Colonel Culver was weakly raising his head.

* * * * *

"What hit us?" he demanded when Smithy got to him. "Did I crash?" He looked about him with dazed eyes from which he never would have seen again, but for the protection of his goggles.

"Fire," said Smithy tersely. "They did it, the devils, and it wasn't a flame-thrower, either. There wasn't a flash of their cursed green light. It just flicked us for a second. You got the worst of it. Your half roll saved us. That thing, whatever it was, would have ripped our left wing off in a second."

He was looking at the forward cockpit where the metal fuselage was melted. The leather cushioning around the edge was black and charred. Culver's helmet had protected him, but half of his face was seared as if it had been struck by a white flame.

"But we got some of them: they know we can hit back...." Smithy began, but knew he was speaking to deaf ears. Again his passenger had lapsed into unconsciousness.

Quickly he disconnected their own radio receiver and threw on the emergency radio siren. Ahead of them for a hundred miles an invisible beam was carrying the discordant blast. Then, with throttle open full, regardless of levels and of air traffic that tore frenziedly from his path, he drove straight for the home field.

* * * * *

In the office of the Governor, the radio newscaster was announcing last-minute items of interest. The Governor switched off the instrument as Smithy entered, supporting the tall figure of Colonel Culver, whose face and head were swathed in bandages. Culver had insisted upon accompanying him for the rendering of their report, though Smithy had to do the talking for both of them.

He outlined their experience in brief sentences. "And now," he was saying grimly, "you can go as far as you please, Governor. You've got a man's sized fight on your hands. We don't know how many there are of them. We don't know how fast they'll spread out, but—"

A shrill wail interrupted him. From the newscasting instrument came a flash of red that filled the room. The crystal, the emergency call, installed on all radios within the past year and never yet used, was clamoring for the country's attention.

Governor Drake sprang to switch it on, and tried to explain to Smithy as he did so. "It's out of my hands now," he said. "Washington has—" Then the radio came on with a voice which shouted:

"Emergency order. All aircraft take notice. Mole-men"—Smithy started at the sound of the word; it was the name he had given them himself—"Mole-men are invading Western states. A new race. They have come from within the earth. In Arizona, three ships of the Transcontinental Day Line, Southern Division, have been destroyed with the loss of all passengers and crew. Shattered in air.

"It is war, war with an unknown race. Goldfield, Nevada, is in ruins. Heavy loss of life. Federal Government taking control. Air-Control Board orders traffic to avoid following areas...."

There followed a list of locations, while still the red crystal blazed its warning across the land and to all aircraft in the skies. Southern California, Arizona, Nevada—Southern Transcontinental Routes closed; all except military aircraft grounded in restricted areas.

* * * * *

Smithy's excitement had left him. In his mind he was looking far off, deep under the surface of the world. "They've been there," he said quietly, "thousands of years. A new race—and they've just now learned of this other world outside. Three ships downed! They picked them off in the air just as they tried to do with us. I knew we had a fight on our hands."

His voice died to silence in the room where now the new announcer was giving a list of the dead—a room where men were speechless before an emergency no man could have foreseen. But Smithy's eyes, gazing far off, saw nothing of that room. Again he was seated on an outthrust point of rock, Dean Rawson beside him, and from the black depths beneath a man's voice was rising clearly, mockingly it seemed, in song:

"You're pokin' through the crust of hell And braggin' too damn loud of it, For, when you get to hell, you'll find The devil there to pay!"

"The devil is there to pay," Smithy repeated softly. He leaned across and placed one hand on Colonel Culver's knee. "With your assistance, Colonel, I'd like to go down there and find him. You and I, we know the way—we'll organize an expedition. Maybe we can settle that debt."



CHAPTER XV

The Lake of Fire

Before a barrier of gold, waist-high, Dean Rawson stood tense and rigid. Behind him the great cave-room swarmed with warriors, leaders, doubtless, of the unholy hordes. But beyond the barrier were the real leaders of the Mole-men tribes—Phee-e-al, ruler in chief, and his clustering guard of high priests. In the flooding light from the wall, their eyes were circles of dead-white skin. A black speck glinted wickedly in the center of each.

Phee-e-al was speaking. His artificially whitened face grimaced hideously; the shrill whistling voice made no comprehensible sound. But in some manner Rawson gathered a dim realization of what his gestures meant.

Phee-e-al pointed at the captive; and one lean hand, with talons more suggestive of a bird of prey than of a human hand, pointed downward. "Gevarro," he said. The word was repeated many times in the course of his whistling talk.

"Gevarro"—what did it mean? Then Rawson remembered. It was the word he had heard in his dreams, the name of the lake of fire.

The voices of the priests rose in a shrill chorus of protests, and even Phee-e-al stood silent. They crowded about their ruler, and Rawson knew they were demanding him for themselves. Then the one who still held a human body in his arms sprang forward and his long talons worked unspeakable mutilation upon the body and face.

Rawson averted his eyes from the ghastly spectacle. For, swiftly, he was seeing something more horrifying than this desecration of a dead body; he was seeing himself, still living, tortured and torn by those same beastly hands. The dead face of Sheriff Downer was staring at him from red, eyeless sockets as with one leap Rawson threw himself over the golden wall. Ten leaping strides away was his gun. In that instant of realization, he knew why his life had been spared.

In the room of fire he had destroyed their priest. They had saved him for further torture.

* * * * *

To get his hands on the gun, to die fighting—the thought was an unspoken prayer in his mind. Behind him the room echoed with demoniac shrieks. Before him was the metal stand. His outstretched hands fell just short of the blue .45 as he crashed to the floor. The copper ones were upon him.

Half stunned by the fall, he hardly knew when they dragged him to his feet. He was facing the golden figure of Phee-e-al, but now the ruler's indecision had vanished. He was exercising his full authority and even Rawson's throbbing brain comprehended the doom that was being pronounced.

"Gevarro!" he was shrieking. "Gevarro!"

Beside him a priest swept the metal table clear. Rawson's clothing, the gun, the radio receiver, all were snatched up and hurled into one of the massive chests. Phee-e-al was still shouting shrill commands. An instant later Rawson was lifted in air, rushed to the barrier and thrown bodily from the sacred premises he had invaded. Then the hands of the red guard closed about him before he could struggle to his feet. A shining object swung down above his head. It was the last he knew.

* * * * *

His dreams were of falling. Always when he half roused to consciousness he was aware of that smooth, even descent, and he knew it had continued for hours.

Once he saw black walls slipping smoothly past, upward, always upward. Gropingly he tried to marshal his facts into some understandable sequence. He was falling, falling toward the center of the earth, and this that he saw was not rock, or any metal such as he knew.

"It's all different," he told himself dully, "new kind of matter. Rock would flow; this stands the pressure." But he knew the air pressure had built up tremendously. The blood was pounding in his ears. He wanted to sleep.

It was the heat that awakened him. The air was stifling him, suffocating. He was struggling to move his heavy body, fighting against this nightmare of heat when he opened his eyes and knew that he was in a place of light. First to be seen were walls, no longer black, no longer even with the characteristics of rock, or even metal. Here, as Rawson had sensed, was new material to form the core of a world. It would have been red in an ordinary light. It was transformed to orange, strangely terrifying in the blazing flood of yellow brilliance that came from the tunnel's end.

Rawson's brain was not working clearly. An unendurable weight seemed pressing upon him—the air pressure, he thought, to which he had not yet become accustomed. And the air, itself, hot—hot!

A breeze blew steadily past toward that place of yellow horror at the tunnel's end. Yellow, that reflected light; but its source was a searing, dazzling white in the one brief instant when Rawson dared turn his eyes.

Hands held him erect, red, gripping hands. One, whose body seemed molten copper in that fierce glare, approached. His hand described a circle over Rawson's bare chest. Straight lines radiated out from the circle, lines of stabbing pain for the helpless man. He had seen the same emblem in the temple of fire, again in the big room where Phee-e-al had stood.

* * * * *

The living sacrifice was prepared. Burned into his bare flesh was the emblem of their legendary sun-god. The priests, their bodies coated with a flashing coppery film that must somehow be heat-resistant, had him in their grasp.

The red warriors had fallen back. Then Phee-e-al appeared; he joined the march of death of which Dean Rawson formed the head. Voices were chanting—somewhere a trumpet blared. Then Rawson, moving like one in a dream, knew the priests were guiding him toward that waiting, incredible heat.

The tunnel's end was near. About him was an inferno where heat and hot colors blended. The whole world seemed aflame, but beyond the tunnel's end was a seething pit upon which no human eyes could look and live.

One glimpse only of the unbearable whiteness beneath which was the lake of fire, then the chains of his stupor broke and Dean Rawson struggled frenziedly in the grip of two copper giants.

They had been chanting a shrill monotonous refrain. They ceased now as they fought to throw the man out past that last ten paces where even they dared not go.

Rawson was beyond conscious thought. Eyes closed against the unendurable heat, he fought blindly, desperately, then knew his last strength was going from him. Still struggling he opened his eyes; some thought of meeting death face to face compelled him.

* * * * *

A hideous coppery face glared close into his own. Miraculously it vanished, disappeared in a cloud of white. Then the blazing walls were gone—there was nothing in all the world but rushing clouds of whiteness, shrieking winds, the roar of an explosion—and cold, so biting that it burned like heat.

Vaguely he wondered at the hands that still clutched at him. Dimly he sensed other bodies close to his, other hands that tore him free where he lay, still struggling with the priests, upon the floor. A narrow opening was in the wall, a blur of darkness in the billowing white clouds. They were dragging him into it, those others who held him, and they were white—white as the vapor that whirled about him.

Ahead, the girl of his former dreams was guiding him, her hand cool and soft in his. Others helped him; he ran stumblingly where they led down a steep and narrow way.

The White Ones! In a vision they had reached out to him before. Was this, too, a dream? Was it only the delirium of death? That burst of cold—had it truly been liquid fires, wrapping him around?

Dean Rawson could not be sure. He knew only that his fate lay wholly in the hands of these White Ones—and that hideous eyes in the coppery face of a priest had glared at them as they fled.



CHAPTER XVI

The Metal Shell



[Sidenote: The Voice of the Mountain heralds Rawson's Messianic coming to the White Ones in their hour of need.]

Dean Rawson had passed through a nerve-racking experience. It was not a question of courage—Rawson had plenty of that—but there are times when a man's nervous system is shocked almost to insensibility by sheer horror. Not at once did he realize what was happening.

Perhaps it was the sound of pursuit that jarred him out of the fog clouding all his thoughts and perceptions. It was like the sound of fighting animals—cat-beasts—whose snarls had risen to screaming, squalling shrieks of rage. It was sheer beastliness, the din that echoed through that narrow passage.

Ahead of him the girl was running. She held a light in her hand. Soft wrappings of cloth hung loosely from her waist; like her golden hair, it was flung backward in the strong draft of air against which they were struggling. She was outlined clearly before the red, rock-like masses where her light was falling; she was running swiftly, gracefully, like a wild, woodland nymph.

Two men, their milk-white bodies naked but for the thick folds of their loin cloths, were beside Rawson, helping him along. Two others followed. And, by their haste and their odd whispered words of alarm, he knew that pursuit had not been expected; they must have thought to get away unobserved.

Rawson felt his strength returning. He shook himself free from those who tried to aid him. He was amazed at how easily he ran: his weight was a mere nothing; his efforts were expended in driving his body against the blast of wind. The air seemed dense, thick; he had almost the feeling of forcing himself through water.

Ahead of him the girl darted abruptly through a narrow crack in the wall. Rawson followed—and then began a wild race through a network of connecting passages, a vast labyrinth of caves, more like fractures in this strange red substance which Rawson could think of only as rock, for lack of a more accurate name, until at last there was no sound except that of their own hurrying feet.

* * * * *

They stopped and stood panting in one of the wider passages. He heard nothing but the endless rush of the wind. For the first time Rawson became aware of his own almost naked condition.

The mole-men had prepared him for the sacrifice. They had decked him with a loin cloth of woven gold. It felt cold to the touch, and Rawson did not doubt its being made of fine threads of the precious metal. About his neck hung a gold chain with a heavy object suspended; he tore it off, and found again a representation of a golden sun. The copper priests had arrayed him to meet their fire-god, and again Rawson wondered at the emblem they employed.

"What in the name of the starlit heavens," he demanded silently of himself, "could this buried race know of the sun?"

The others were watching him. In the glow of that strange light held by the girl he saw them smiling. They were congratulating one another with odd, soft-syllabled words. And Rawson, ignorant of their tongue, was mute, when his whole soul cried out to thank them.

He gripped the hands of the men. They were as tall as himself, their gaze level with his own. Their faces were human, friendly; their eyes sparkled and smiled into his. Then he turned to the girl.

She had seen the method of greeting this stranger employed. She extended her hand—a white hand, slim, soft, cool. And Rawson, choking with emotion, knowing that here was the one who had first seen him and who had returned to save him, a stranger, bent low above that hand, held in his own so rough and burned, and pressed his lips to the slender fingers in a quick caress.

When he raised his head she was looking at him oddly; her eyes were deep, serious and unsmiling. He wondered if, blunderingly, he had offended her. He could not know; he did not know their customs.

Again the slim girlish figure turned; her jeweled breast-plates flashed as she led the others on where always the way led upward and the wind pressed against them unceasingly.

* * * * *

The White Ones wore sandals that seemed woven of glass. Rawson's bare feet were bruised and sore, for those narrower clefts had been paved only with broken fragments of the red walls. He moved less easily now. The heavy, beating air tired him; the lightness of his body made it all the more difficult to fight the steady wind. Still he followed the white figure of the girl where her light was flashing on endless walls of red.

In his ears a new sound was registering. Above the rush of the air, that now was soft and warm, a new note had risen to a hollow, unremitting roar. He knew that for some time he had been hearing it faintly. It grew louder, one long, steady, unchanging note, as they advanced. It was a deafening reverberation that seemed shaking the whole earth when they came at last to an open room.

It beat upon him thunderously. As deep as the deepest tone of a mighty organ, like a thousand gigantic organs welded in one, it roared and shook him through and through with its single note.

Exhausted by his wild flight, surrounded by this maelstrom of sound, he sank to the floor and let his laboring lungs have their way. But his eyes were searching the big room.

* * * * *

The great cave was too regularly formed to have had a natural origin. The light that the girl had carried gave only feeble illumination in so great a space that had so evidently been hollowed out of the solid red matter.

The light flashed here and there as the girl and her companions moved away. They were circling the room. Rawson saw the irregular outlines of entrances to many dark passages like the one through which they had come. The red rock-mass seemingly had been riven and torn, and apparently in front of each opening the white figures fought against the rush of outgoing air. Rawson felt the same current sweeping and whirling gustily about him.

Now his companions were across the room, and between him and them in the center of the floor he saw the mouth of a black well, a pit some twenty or more feet across. Directly above, where the red rock stuff formed a domed ceiling, he found a counterpart of the pit below—another great bore or open shaft, roughly circular. Apparently it went straight on up and was a continuation of that lower pit.

"This room was cut out," Rawson was thinking, "by the white people or the mole-men—Lord knows who, or when, or why. Cut out around this big shaft...."

His thoughts trailed off. Even thinking seemed impossible under the battering of the roaring noise that pounded about him. Then another thought pierced through the bedlam. He had found the source of the uproar.

* * * * *

That upper shaft, the hole that went on up, must be plugged. There was no outlet that way, and this air that drove endlessly upward from the room must be coming from the lower shaft. It was striking up into that upper cavity.

An organ pipe, truly. But whence came the unending blast of air to keep that gigantic instrument in operation? Rawson dropped to his knees and crept slowly across the floor toward the pit. He must test his theory—see if that was where the air was driving in.

Just short of the brink he stopped. The girl had called—a cry of alarm. She was running swiftly toward him, circling the pit. And Rawson, as she tugged at him, trying to draw him back, knew that she had mistaken his motive. She had thought he was going to cast himself down.

He did not need to go farther. He was close to the edge. And now, even above that roaring sound he heard the rush of the column of air. He seated himself on the stone floor and smiled up at the girl reassuringly. Her eyes that had been dark with fear changed swiftly to a look so sweetly, beautifully tender that Dean Rawson found himself thrilled and shaken by an emotion that set his nerves to quivering even more than did the sonorous vibration from above.

Her companions had joined her. Dean saw her eyes regarding them steadily. Then, as if reaching some sudden final conclusion in her own mind, she dropped swiftly to her knees beside him, raised one of his hands in hers and pressed her soft lips against it.

And Dean, even had he known their language, could not in that moment have spoken. There had been something in the look of her eyes and the soft touch of her lips that of themselves went far beyond words.

"You darling," he was whispering softly to himself as the girl sprang to her feet and walked swiftly away, the others following.

"An angel, no less—down in this damned place!"

* * * * *

He wondered, as he watched the flickering light far across the room, what destination they could be bound for. Surely no one so radiantly beautiful could inhabit a world of endless dungeons like that where the mole-men lived. But if not that, then what? Where would their next journey take them? And in what direction would they go?

Again Rawson's thoughts were submerged beneath his own weariness. This air that beat about him had seemed cool after the terrific heat that drove in off the Lake of Fire. Now he realized that the air itself was hot. His one spurt of strength and energy had been expended.

He watched the men disappear into one of the passages, but he roused himself when they returned. They were clinging to a strange device, a metal cylinder that floated in air above their heads like a dirigible on end. It was about eight feet in diameter and some fourteen feet in height; both upper and lower ends were rounded. A cage of parallel bars enclosed it from end to end; like springs of steel they extended from top to bottom where they curved in and were attached to the rounded ends.

* * * * *

Rawson sat up quickly and stared in startled amazement at the thing glinting like polished aluminum in the light. And his engineer's mind responded as much to that smooth finish and the evident workmanship that had entered into the making of this thing as it did to the object itself.

The girl placed her light on the floor. She, too, reached up and gripped a bar of the protecting cage to which the others were holding. With her added weight and strength they drew it down almost to the floor. Rawson knew by their efforts that they were dealing with something actually buoyant, a metal balloon. One of the men, still putting his weight on the bars, reached in and opened a door in the smooth shell. He stepped inside, and a moment later the big shell dropped to the floor and, still vertical, stood on the lower rounded end of the protecting cage, rocking gently as the hot whirling wind hit it.

They were communicating among themselves by signs. Rawson saw them motioning. Speech was useless in that roaring, pandemonium-filled room.

She was motioning for him to follow. One of the men circled that central pit, came beside Rawson and helped him to his feet, steadying him as they crossed the room. The girl had entered the big metal shell. Dean saw the glow of her torch shining through the open doorway and through two other windows of crystal glass.

The big room had grown dimmer. The high ceiling was lost in murky shadows. All the room was dark save where that light struck upon walls and floor to make them glow blood-red. The waiting lighted shell seemed a haven of refuge. To get inside, close the door, lock out some of this unendurable, battering sound—it was all Rawson asked, all he could think.

The door closed. He was within the shell, standing on a smooth metal floor. The others were beside him. Dully he wondered what wild adventure was ahead.

* * * * *

He had expected—he hardly knew what. But there should have been machinery of some sort. If this weird balloon thing was actually to carry them, there must be some mechanism, some propelling power. And instead he saw nothing but the shining walls of the circular room and at the exact center, reaching from floor to ceiling, a six-inch metal post that thickened to a boxlike form on a level with his eyes. There was a plate on the side of that box, a cover, and clamps that held it in place, and on an adjoining side two little levers, one near the top of the box, the other near the bottom.

His one all-inclusive glance showed him bull's-eye windows in the ceiling. There were more of them in the floor. One curved bar, circling the room, was mounted on brackets against the wall. They were telling him by signs that he was to put his hands on it and hang on. One of the men was beside that central post. He too gripped at a projecting hand-hold. His other hand was on the lower lever.

Rawson knew his disappointment was unreasonable, but his weary mind was tired of mysteries. Some understandable bit of machinery would have been reassuring. And then in his next thought he asked himself what difference did it make. If this childish balloon thing were really capable of carrying them somewhere, what of it? It could only mean more of this hideous inner world that grew more unbearably fantastic with each new experience.

His life had been saved. True, but for what end? The girl's eyes were upon him, reading the expression on his face. She smiled encouragingly. Then Rawson's hands tightened upon the metal bar. The man who stood by the central post had moved one lever the merest trifle. Rawson felt the floor lifting beneath him. Then the shell, like a bubble of metal, pitched and tossed as the powerful air currents caught it.

* * * * *

His own lightness saved him from injury. He gripped the bar and held himself free of the wall. The round top of their strange craft grated against the domed roof. Then again the ship steadied and seemed motionless, and Rawson knew they had slipped up into the still air of that upper shaft.

For one wild instant, filled with impossible hope, Rawson saw this as a means of ascent to his own world. Then reason tore those wild hopes to shreds.

"It's closed up above," he thought. "It must be. That's why it sounded that way. That's why the air drove off through those side passages."

The next instant held no time for thought. Rawson's whole attention was concentrated upon the bar to which he clung. For, quicker than thought, the metal shell, the little cylindrical world in which he and these others were, fell swiftly beneath them.

His body twisted in mid-air. He knew the others were being thrown in the same manner. Then, what an instant before had been the ceiling was now a floor beneath his feet, pressing up against him and giving him weight—and by the whistling rush of the air that tore past their shell he knew they had fallen with marvelous swiftness straight down through the throat of that lower shaft.

And now what had been down was up. The ceiling of this strange room was now their floor, but Rawson was not deceived. "Acceleration," he said. "It's crowding us. The shell tends to fall faster than we do. It's like an elevator traveling downward at a swifter rate than a free falling body."

* * * * *

He had glimpsed the glassy-side of that well into which he knew they had been flung. He knew that the shrieks that filled the room time and again were caused by the touching of their shell's guiding and protecting bars against one glassy wall. Those sounds came always from the same side and Rawson found momentary satisfaction in his own understanding of the phenomenon.

"We're falling free," he argued within his own mind, "falling toward the center of the earth. And a falling body wouldn't follow a vertical course. It would tend to hug against one wall." And by that he knew something of their speed. The necessity for it was apparent a moment later.

Above his head the bull's-eyes pointing forward in the direction of their flight were faintly red. Swiftly they changed to crimson. Rawson was standing beside a window in the wall of their craft. That, too, grew quickly to an area of dazzling brightness. Slowly the heat struck in. The air in the little room was stifling. He saw the girl turn her head and give a sharp order.

The man by the central post responded with another slight movement of the lever. Beneath Rawson's feet the floor pressed upward in a surge of speed that bent his knees and bore him downward. Under his hands the rod to which he clung was hot. The shining walls were dimly glowing. They were being hurled through the very heart of hell....

* * * * *

And then it was past. The crimson horror beyond those windows grew dull and then black. In the blunt nose of their craft a tiny crevice must have opened. The one who drove that projectile in its shrieking flight had touched another control that Rawson had not before seen. And with a piercing shriek a thin jet of cold air drove down into the hot room.

No wine could have been one-half so potent. That thin jet filled the room with buffeting whirlwinds that grew quickly cold.

Then their speed was checked. Abruptly Rawson was weightless, his body hanging in air, moved only as he moved his hand upon the bar. Only a few feet away was the body of the girl floating weightless like himself. The others were shouting loud words of satisfaction, but her face was turned toward Rawson, her eyes were smiling into his; while, outside the little shell that fell in meteor flight, were only shrieking winds and the blackness into which they plunged.



CHAPTER XVII

Gor

Through an ordinary experience, Dean Rawson, like any other man, would have kept unconscious measurement of the passing time. An hour, no matter how crowded, would still have been an hour that his mind could measure and grasp. But now he had no least idea of the hours or minutes that had marked their flight. Each lagging second was an age in passing. Even the flashing thoughts that drove swiftly through his mind seemed slow and laborious. Painstakingly he marshaled his few facts.

"They know what they're about, that's one thing dead sure. They're onto their job, and they've got something here that beats anything we've ever had." He mentally nailed that one fact down and passed on to the next. "And that's the bow end of our ship, up there." He looked above him at a dented place in the ceiling, the ceiling that had been the floor of the room when first he stepped into it. "There isn't any up or down any more. I've been flipped back and forth every time we slowed down or accelerated until I don't know where I'm at, but I saw that dented plate in the floor when I got in and we started falling in that direction. But whether we're falling toward the center of the earth still or whether we passed the center back there at that hot spot and now this crazy, senseless shell is flying on and up, perhaps these people know—I don't!"