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.


is 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.