For the clear white light was the first normal lighting he had seen in all the time he had been marooned below. Now he received the first true color visualization of himself and his companion. He saw from his hands that he had become very pale-skinned; all his normal tan had been lost in the cavern worlds. He unpacked the bright, gleaming space helmet and used it as a makeshift mirror. His hair had faded to a light blond, and there were several white hairs now visible, the result presumably of his period of exposure to the unshielded rays of the sun during his passage through space. In the clear light Korree seemed even more transparent than ever, and indeed Robin could make out the shadowy, pulsating shapes of his internal organs quite clearly--his skeleton standing out sharply. He realized how dim and abnormal the phosphorescence of the caverns had really been. Reshouldering his pack, they continued up the deep canyon. In a little while, the gray ashy surface gave way to sandy soil and there was a dampness in the air that indicated the presence of one of the deposits of water. Now the familiar Lunar vegetation was making its presence known and before long they were wandering through a very dense thicket of huge ball-trees and plants. Robin had never seen such a dense jungle growth on the Moon before and he attributed it to the occasional bath of sunlight this one cavern received. It was like a hothouse, a natural one, more or less sealed with a high dampness, natural warmth augmented by screened sunlight. Soon the two found themselves forcing their way single file through the growth, while Cheeky swung into the tops and made his own way, happy in the sort of thick, warm forest his monkey nature demanded. Robin pushed his way through first, with Korree following in the path the Earthling cleared. Robin went on through the jungle, struggling in spite of his powerful Earth muscles to push his pack along. After a while he stopped to rest, looked back. He saw behind him only the bruised and broken stalks of the ball-trees he'd passed through. There was no sign of Korree. Robin stared, but the forest was too thick to allow much vision. He set the pack down, called, "Korree!" There was no answer. Somewhere in the distance a stalk snapped. Robin called again. Still no answer. He started back a few steps, retracing his path, but there was still no sign of his Glassie friend. He suddenly felt uneasy. What was going on here? How had his companion vanished? He went back to where he had left his pack, waited, again calling his friend's name. But still there was no answer. There were more crackling noises somewhere in the thick vegetation. Perhaps Korree was in trouble there? Robin turned in that direction, started to push through the barrier of tree stalks. Suddenly there was a rushing noise, a chorus of shrieks all around, and something heavy fell around him.