Great boulders crashed down the canyon walls and dropped into the creek. They dared not move from the cave, although death seemed certain if they stayed. "I'll leave for a moment," he said. "I'll be back soon." "You're leaving?" There was panic in her voice. "Only for a moment." "And you won't come back. You will go to your world." "No. I'll be back." "Promise? No, don't promise. The promises of Gods often are forgotten before the sounds die away." "I'll be back." He disappeared at once, giving her no chance to object again, and went to the desert of sand, where he had first arrived on the planet. He wanted to see if the storm were world-wide. Stinson had never been in a sand storm before, even on Earth. He could not breathe. He could not see. Bullets of sand stung his skin. Bullets of sand shot into his eyes. Clouds of sand howled around him. He fell, and the wind rolled him over and over in the sand like a tumbleweed. The skirt flew up around his face. He could not get up again. He returned to the cave. Soon after, while they sat huddled together, watching the chaos of tumbling rocks, lightning, and driving rain, the high-pitched keening came again. A sphere of blue fire appeared in the east. Its brilliance put the lightning to shame. It bore down on the cave swiftly, purposefully. Stinson prepared himself to leave. In spite of his desire to protect Sybtl, it was useless to get himself killed when he was powerless to help her. But at the last moment it veered off. "Fiend!" Stinson screamed the word, vaguely marvelling at his own fury. The blue sphere turned and came back. "Monster!" Again. "Murderer!" "Adolescent!" This time it kept going. The rain and wind ceased. Lightning stopped. Thunder rumbled distantly. Clouds disappeared. Stinson and Sybtl emerged from the cave. There was no longer a question of attack from the webfoots, the storm had taken care of that. The fierce sun began its work of drying rocks and throwing shadows and coaxing life out into the open again. Down in the canyon a bird sang, a lonely, cheerful twitter. "The Sand God is tired," Sybtl said. "He is not angry now. I'm glad. Perhaps he will let you stay." "No. Even if he allowed it, I couldn't stay. My people could never live here with a God who is half devil." * * * * * The cone of sand suddenly appeared. It stood in the canyon, its base on a level with the cave. It was quiet. It was dull gray in color. It exuded impressions of death, of hopeful words solemnly spoken over lowered coffins, of cold earth and cold space, of dank, wet catacombs, of creeping, crawling nether things. The bird's twitter stopped abruptly. "Earthman," the Sand God said, as if he were about to make a statement.