But his full attention was drawn to the scene beneath them. The priests had reached their destination. There in a sweeping angle of the cavern wall stood a stone altar, but there was no idol upon it. Whether there was one behind it, Conan could not ascertain, because some trick of the light, or the sweep of the wall, left the space behind the altar in total darkness. The priests had stuck their torches into holes in the stone floor, forming a semicircle of fire in front of the altar at a distance of several yards. Then the priests themselves formed a semicircle inside the crescent of torches, and Gorulga, after lifting his arms aloft in invocation, bent to the altar and laid hands on it. It lifted and tilted backward on its hinder edge, like the lid of a chest, revealing a small crypt. Extending a long arm into the recess, Gorulga brought up a small brass chest. Lowering the altar back into place, he set the chest on it, and threw back the lid. To the eager watchers on the high gallery it seemed as if the action had released a blaze of living fire which throbbed and quivered about the opened chest. Conan's heart leaped and his hand caught at his hilt. The Teeth of Gwahlur at last! The treasure that would make its possessor the richest man in the world! His breath came fast between his clenched teeth. Then he was suddenly aware that a new element had entered into the light of the torches and of the phosphorescent roof, rendering both void. Darkness stole around the altar, except for that glowing spot of evil radiance cast by the teeth of Gwahlur, and that grew and grew. The blacks froze into basaltic statues, their shadows streaming grotesquely and gigantically out behind them. The altar was laved in the glow now, and the astounded features of Gorulga stood out in sharp relief. Then the mysterious space behind the altar swam into the widening illumination. And slowly with the crawling light, figures became visible, like shapes growing out of the night and silence. At first they seemed like gray stone statues, those motionless shapes, hairy, man-like, yet hideously human; but their eyes were alive, cold sparks of gray icy fire. And as the weird glow lit their bestial countenances, Gorulga screamed and fell backward, throwing up his long arms in a gesture of frenzied horror. But a longer arm shot across the altar and a misshapen hand locked on his throat. Screaming and fighting, the high priest was dragged back across the altar; a hammer-like fist smashed down, and Gorulga's cries were stilled. Limp and broken he sagged across the altar, his brains oozing from his crushed skull. And then the servants of Bît-Yakin surged like a bursting flood from hell on the black priests who stood like horror-blasted images. Then there was slaughter, grim and appalling.