Even if this did turn out to be the Himalayas, or some equally remote area, there must be hill tribes about if one went far enough--there should even be an occasional airplane passing overhead. Barney stood just outside the door, frowning, pondering the situation again, searching for the catch in it. McAllen and his friends, whatever else they might be, weren't stupid. There was something involved here that he hadn't become aware of yet. Almost without thought then, he turned up his head, squinting at the bright hazy sky above him-- And saw IT. His breath sucked in and burst from his lungs in a half-strangled, terrified squawk as he staggered backward into the cabin, slammed the door shut, then spun around and began slapping frantically at the switches on the wall-plate until door and window were gone, and only the cabin's soft illumination was around him again. Then he crouched on the floor, his back against the wall, shaking with a terror he could hardly have imagined before. He knew what the catch was now. He had understood it completely in the instant of glancing up and seeing that tiny brilliant blue-white point of light glare down at him through the incandescent cloud layers above. Like a blazing, incredibly horrible insect eye.... _This_ world's sun. THE END OF YEAR ONE Barney Chard came up out of an uneasy sleep to the sudden sharp awareness that something was wrong. For some seconds he lay staring about the unlit cabin, mouth dry, heart hammering with apprehension. Then he discovered it was only that he had left the exit door open and the window switched on.... Only? This was the first time since they had left him here that he had gone to sleep without sealing the cabin first--even when blind drunk, really embalmed. He thought of climbing out of bed and taking care of it now, but decided to let the thing ride. After all he knew there was nothing in the valley--nothing, in fact, on this world--of which he had a realistic reason to be afraid. And he felt dead tired. Weak and sick. Feeling like that no longer alarmed him as it had done at first; it was a simple physical fact. The sheet under him was wet with sweat, though it was no more than comfortably warm in the room. The cabin never became more than comfortably warm. Barney lay back again, trying to figure out how it had happened he had forgotten about the window and the door.