Burl's motivation was no longer noble. He had started uphill in a fit of sulks, and he was ashamed to stop. They came to a place where the mountain-flank sank inward. There was a flat area, and behind it there was a winding cañon of sorts, like a vast crack in the mountain's substance. Burl breasted the curving edge, and walked on level ground. Then he stopped short. The mouth of the cañon was perhaps fifty yards from the lip of the downward slope. There was this level space, and on it there were toadstools and milkweed, and there was food. It was a small, isolated asylum for life such as they were used to. It could have been that here they could have found safety. But it wasn't that way. * * * * * They saw the web at once. It was slung from between the opposite cliff-walls by cables two hundred feet long. Its radiating cables reached down to anchorages on stone. The snare-threads, winding out and out in that logarithmic spiral which men on other planets had noted thousands of years before--the snare-threads were a yard apart. The web was set for giant game. It was empty now, but Burl searched keenly and saw the tight-rope-cable leading from the very center of the web to a rocky shelf some fifty feet above the cañon's floor. At its end he saw the spider. It waited there, almost invisible against the stone, with one furry leg touching the cable that led to its waiting-place so that the slightest touch on any part of the web would warn it instantly. Burl's followers accumulated behind him. They stared. They knew, of course, that a web-spider will not leave its snare under any normal circumstances. They were not afraid of that. But they looked at the ground between the web and themselves. It was a charnel-house of murdered creatures. Half-inch-thick wing-cases of dead beetles. The cleaned-out carcasses of other giants. The ovipositor of an ichneumon-fly--six feet of slender, springy, deadly-pointed tube--and abdomen-plates of bees and draggled antennae of moths and butterflies. Something very terrible lived in this small place. The mountainsides were barren of food for big flying things. Anything which did fly so high for any reason would never land on sloping, foodless stone. It would land here. And very obviously it would die. Because something--something--killed them as they came. It denned back in the cañon where they could not see. It dined here. The humans looked and shivered. All but Burl. He deliberately chose for himself a magnificent lance grown by one dead creature for its own defense. He pulled it out of the ground and cleaned it with his hands. He seemed absorbed, but he was terribly aware of the inner depths of the cañon. He was actually pretending, for the sake of what he believed his dignity.