Northward, the Mare Imbrium stretched mysterious and purple, its million rills and ridges and crater holes flattened by distance and the gathering darkness into a seeming level surface. The night slowly deepened. The dead-black vault of the sky blazed with its brilliant starry gems. The gibbous Earth hung high above the horizon, motionless, save for the invisible pendulum sway over the tiny arc, of its libration: widening to quadrature, casting upon the bleak naked Lunar landscape its mellow Earth-glow.
Slow, measured process, this coming of the Lunar night! For an Earth-day the sunset slowly faded on the Apennines; the poised Earth widened a little further—an Earth-day of time, with the Earth-disc visibly rotating, the faint tracery of its oceans and continents passing in slow, majestic review.
Another Earth-day interval. Then another. And another. Full night now enveloped Archimedes. Splotches of Earth-light and starlight sheen slowly shifted as the night advanced.
Between the great crater and the nearby mountains, the broken, pseudo-level lowlands lay wan in the Earth-light. A few hundred miles, as distance would be measured upon Earth. A million million rills were here. Valleys and ridges, ravines, sharp-walled canyons, cliffs and crags—tiny craters like pock-marks.
Naked, gray porous rock everywhere. This denuded landscape! Cracked and scarred and tumbled, as though some inexorable Titan torch had seared and crumbled and broken it, left it now congealed like a wind-lashed sea abruptly frozen into immobility.
Moonlight upon Earth so gently shines to make romantic a lover's smile! But the reality of the Lunar night is cold beyond human rationality. Cold and darkly silent. Grim desolation. Awesome. Majestic. A frowning majesty that even to the most intrepid human beholder is inconceivably forbidding.
And there were humans here now. On this tumbled plain, between Archimedes and the mountains, one small crater amid the million of its fellows was distinguished this night by the presence of humans. The Grantline camp! It huddled in the deepest purple shadows on the side of a bowl-like pit, a crudely circular orifice with a scant two miles across its rippling rim. There was faint light here to mark the presence of the living intruders. The blue-glow radiance of Morrell tube-lights under a spread of glassite.
The Grantline camp stood mid-way up one of the inner cliff-walls of the little crater. The broken, rock-strewn floor, two miles wide, lay five hundred feet below the camp. Behind it, the jagged precipitous cliff rose another five hundred to the heights of the upper rim. A broad level shelf hung midway up the cliff, and upon it Grantline had built his little group of glassite dome shelters. Viewed from above there was the darkly purple crater floor, the upflung circular rim where the Earth-light tinged the spires and crags with yellow sheen; and on the shelf, like a huddled group of birds nests, Grantline's domes clung and gazed down upon the inner valley.
Intricate task, the building of these glassite shelters! There were three. The main one stood close at the brink of the ledge. A quadrangle of glassite walls, a hundred feet in length by half as wide, and a scant ten feet high to its flat-arched dome roof. Built for this purpose in Great-New York, Grantline had brought his aluminite girders and braces and the glassite panels in sections.