Sighting upward from flat against the wall, he chose his path quickly, and began to climb. The stone was smooth but grainy; he dug his fingers into narrow niches and pulled himself slowly upward, bracing himself with footholds whenever he could. It was laborious, painful work; twice he lost handholds and hung precariously until his straining fingers again found some indentation. Sweat covered him; the wind from the Flat whipped around the wall and touched the moisture on his back coldly. But his face was set in a frozen grimness and though his breath came in gasps he made no other sound. When he had neared the top he suddenly seemed to reach a dead-end; the stones were smooth above him. His arms ached, his shoulders seemed deadened; he clung numbly to the wall and searched for another path. When he found it, he had to descend ten feet and move to the right before he could re-ascend; as he retraced his route down the wall he noticed blood where his torn fingers had left their mark. But he could not feel the pain in his fingers. At last, when the wall had come to seem a separate world of existence which was all that he would ever know, a vertical plane to which he clung with dim determination, hardly knowing why any longer ... at last, he reached the top. His groping hand reached up and found the edge of the wall; his fingers grasped it gratefully and he pulled himself up to hang by both hands and survey the interior of the fortress. A deserted floor stretched before him, shadowed by the late-afternoon darkness which crept down from the mountains to rest on the aged remains of the city. Forty feet down the walkway he saw stairs descending, but his head swam and all he could focus on clearly was the light film of dust and sand which covered even this topmost level of the city, blown in shallow drifts against the walls which rose a few feet above the floor here. There were no footprints in that dust; no one had walked here for thousands of years. Wearily, he pulled himself over the last barrier and fell numbly to the floor, where he lay for long minutes fighting for breath. His lungs were raw; the thin air of the planet caught and rasped in his throat. His hands were torn and bleeding, and the knife-scar over his right eye had begun to throb, but he ignored the pain. He had to clear his head.... Eventually he was able to stand, swaying beneath the dark sky. Below him he saw the city, broken and dim, empty streets winding between fallen walls and pillars. Mara's flyer lay shattered against one of those broken walls; seeing it, he wondered how badly she had been hurt. He moved toward the stairs, and descended them slowly. The stairs of the city were as he had remembered them from Tebron's memories, and yet not the same. To the Earthman they were steep: the steps were like separate levels, three feet across and almost four feet deep. His legs ached at each step as the shock of his weight fell on them.