"But who were these old ones?" demanded Conan.

She spread her slim hands helplessly. "Not even in legendary is this city mentioned. But look at the handholes at either end of the altar! Priests often conceal their treasures beneath their altars. Four of you lay hold and see if you can lift it."

She stepped back to make room for them, glancing up at the tower which loomed drunkenly above them. Three of the strongest blacks had gripped the handholes cut into the stone curiously unsuited to human hands-when Belît sprang back with a sharp cry. They froze in their places, and Conan, bending to aid them, wheeled with a startled curse.

"A snake in the grass," she said, backing away. "Come and slay it; the rest of you bend your backs to the stone."

Conan came quickly toward her, another taking his place. As he impatiently scanned the grass for the reptile, the giant blacks braced their feet, grunted and heaved with their huge muscles coiling and straining under their ebon skin. The altar did not come off the ground, but it revolved suddenly on its side. And simultaneously there was a grinding rumble above and the tower came crashing down, covering the four black men with broken masonry.

A cry of horror rose from their comrades. Belît's slim fingers dug into Conan's arm-muscles. "There was no serpent," she whispered. "It was but a ruse to call you away. I feared; the old ones guarded their treasure well. Let us clear away the stones."

With herculean labor they did so, and lifted out the mangled bodies of the four men. And under them, stained with their blood, the pirates found a crypt carved in the solid stone. The altar, hinged curiously with stone rods and sockets on one side, had served as its lid. And at first glance the crypt seemed brimming with liquid fire, catching the early light with a million blazing facets. Undreamable wealth lay before the eyes of the gaping pirates; diamonds, rubies, bloodstones, sapphires, turquoises, moonstones, opals, emeralds, amethysts, unknown gems that shone like the eyes of evil women. The crypt was filled to the brim with bright stones that the morning sun struck into lambent flame.