He was not shaken, for he had dropped less than six feet and the bottom was soft. He crouched, his emotions clashing, disgust and relief. And then when he looked about him again he felt the mad surge of hope, for there was light ahead! Floundering and splashing and steadying himself against the walls, he gained the bend and saw the blinding force of daylight. For some little while he could not look directly at it nor could his wits embrace the whole of the promise that light offered. But at last, when his pupils were contracted to normal and his realization distilled into reason, he went forward and looked down. Once more his hope died. Here was a sheer drop of nearly a hundred feet, a cliff face which offered no slightest hold, greased by the sewage and worn smooth by the water. Clinging forlornly to the edge, he scanned the great dome of the military base a mile overhead, scanned the cluster of metal huts on the plain before him, watched far-off dots which were soldiers. There was a roar overhead and he drew back lest he be seen by the small scout plane which cruised beneath the dome. When its sound had faded he again ventured a glance out, looking up to make sure he was not seen from above. And once more hope flared. For the wall above this opening offered grips in the form of projecting stones, and the climb was less than twenty feet! It was difficult to swing out of the opening and grab the first rock. It took courage to so expose himself to the sentries who, though two thousand yards away, could pick him easily off the wall if they noticed him. The rock he grabbed came loose in his hand and he nearly hurtled down the cliff. He crouched, panting, denied, wearied beyond endurance with the sudden shock of it. And then he stood off from himself again and snarled a command to go on and up. The next rock he trusted held, and in a moment he was glued to the face of the sheer wall, making weary muscles respond to orders. Why he was tired he did not understand, for he had done no great amount of physical exertion. But rock by rock, as he went up, his energy flooded from him and left him in a hazed realm of semiconsciousness which threatened uncaring surrender. He rested for longer and longer intervals between lifts, and what had been twenty feet seemed to stretch to a tortured infinity. He could not believe that he had come within two feet of the top; but, staring up, he saw that he should believe it. A savage will took hold of him