THE TREASURE VAULTS OF OPAR
bottom of the black abyss that yawned before him, though, clinging to the edge of the floor, he lowered his body into the darkness to its full length.
Finally it occurred to him to look up, and there above him he saw through a round opening a tiny circular patch of starry sky. Feeling up along the sides of the shaft as far as he could reach, the ape-man discovered that so much of the wall as he could feel converged toward the center of the shaft as it rose. This fact precluded possibility of escape in that direction.
As he sat speculating on the nature and uses of this strange passage and its terminal shaft, the moon topped the opening above, letting a flood of soft, silvery light into the shadowy place. Instantly the nature of the shaft became apparent to Tarzan, for far below him he saw the shimmering surface of water. He had come upon an ancient well—but what was the purpose of the connection between the well and the dungeon in which he had been hidden?
As the moon crossed the opening of the shaft its light flooded the whole interior, and then Tarzan saw directly across from him another opening in the opposite wall. He wondered if this might not be the mouth of a passage leading to possible escape. It would be worth investigating, at least, and this he determined to do.
Quickly returning to the wall he had demolished to explore what lay beyond it, he carried the stones into the passageway and replaced them from that side.
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