However, a careful survey of the curved landscape in all directions failed to reveal a glimpse of anything remotely threatening. He donned his oxygen concentrator--in appearance a simple tube of a thing, projecting about six inches above his forehead, and set in a light metal band that encircled his head. Adjusting his gravity regulator so he wouldn't inadvertently walk clear off into empty space--he calculated his weight would be less than a twentieth of an ounce here--he stepped out of the Dart and gazed around at the little world. Before him was the tiny lake, of an emerald green hue in the flashing sunlight. Around its shores, and covering the adjacent, softly rolling countryside as far as eye could reach, was a thick growth of carmine-tinted vegetation: squat, enormous-leaved bushes; low, sturdy trees, webbed together by innumerable vines. To left and right, miniature mountains reared ragged crests over the abbreviated horizon, making the spot he was in a peaceful, lovely valley. He sighed. There was everything here a man could wish for--provided he could win it! Loosening his ray-pistol in its holster, he started to walk slowly around the lake to choose a site for the house he intended to build. On the opposite shore he found a place that looked suitable. A few yards back from the water's edge, curling in a thick crescent like a giant sleeping on its side, was a precipitous outcropping of rock; curious stuff, rather like granite, that gleamed with dull opalescence in the brilliant sunlight. With that as a sort of natural buttress behind the house, and with the beautiful lake as his front dooryard, he'd have a location that any man might envy. He returned to his Dart, hopped back across the lake in it, and unloaded his Sco drill[1]. With this he planned to sink a shaft that would serve in the future as the cellar for his villa, and in the present as an entrenchment against danger. But now the swift night of Z-40 was almost upon him. The low slant of the descending sun warned him that he had less than ten minutes of light left, until the next three-hour day should break over the eastern rim. He placed the drums and the flexible hose of the Sco drill so that he could begin operations with it as soon as the dawn broke, and started to walk toward the precipitous outcropping of quartziferous stone immediately behind the home-site he had picked. He would climb to the top of this for a short look around, and then return to the Dart--in which double-hulled, metal fortress he thought he would be safe from anything. * * * * * He had almost reached the rock outcropping when the peculiarities of its outline struck him anew. He'd already observed that the craggy mound rather resembled a sleeping, formless giant. The closer he got to it the more the resemblance was heightened and the greater grew his perplexity.