The colors were varied and startling, the architecture amazing. Many roofs were cup or saucer-shaped with a small hole in the center of each, as though they had been constructed to catch rain-water and conduct it to a reservoir beneath; but nearly all the others had the large opening in the top that Bradley had seen used by these flying men in lieu of doorways. At all levels were the myriad poles surmounted by grinning skulls; but the two most prominent features of the city were the round tower of human skulls that Bradley had noted earlier in the day and another and much larger edifice near the center of the city. As they approached it, Bradley saw that it was a huge building rising a hundred feet in height from the ground and that it stood alone in the center of what might have been called a plaza in some other part of the world. Its various parts, however, were set together with the same strange irregularity that marked the architecture of the city as a whole; and it was capped by an enormous saucer-shaped roof which projected far beyond the eaves, having the appearance of a colossal Chinese coolie hat, inverted. The Wieroo bearing Bradley passed over one corner of the open space about the large building, revealing to the Englishman grass and trees and running water beneath. They passed the building and about five hundred yards beyond the creature alighted on the roof of a square, blue building surmounted by seven poles bearing seven skulls. This then, thought Bradley, is the Blue Place of Seven Skulls. Over the opening in the roof was a grated covering, and this the Wieroo removed. The thing then tied a piece of fiber rope to one of Bradley's ankles and rolled him over the edge of the opening. All was dark below and for an instant the Englishman came as near to experiencing real terror as he had ever come in his life before. As he rolled off into the black abyss he felt the rope tighten about his ankle and an instant later he was stopped with a sudden jerk to swing pendulumlike, head downward. Then the creature lowered away until Bradley's head came in sudden and painful contact with the floor below, after which the Wieroo let loose of the rope entirely and the Englishman's body crashed to the wooden planking. He felt the free end of the rope dropped upon him and heard the grating being slid into place above him. Chapter 3 Half-stunned, Bradley lay for a minute as he had fallen and then slowly and painfully wriggled into a less uncomfortable position. He could see nothing of his surroundings in the gloom about him until after a few minutes his eyes became accustomed to the dark interior when he rolled them from side to side in survey of his prison. He discovered himself to be in a bare room which was windowless, nor could he see any other opening than that through which he had been lowered. In one corner was a huddled mass that might have been almost anything from a bundle of rags to a dead body.