Shortly afterward, the unending procession of plains, mountains, crags, and hills that had been marching across the cabin display screen slowed to a halt and the view started growing perceptively larger. Hunt recognized the twin ring-walled plains of Ptolemy and Albategnius, with its central conical mountain and Crater Klein interrupting its encircling wall, before the ship swung northward and these details were lost off the top of the steadily enlarging image. The picture stabilized, now centered upon the broken and crumbling mountain wall that separated Ptolemy from the southern edge of the Plain of Hipparchus. What had previously looked like smooth terrain resolved itself into a jumble of rugged cliffs and valleys, and in the center, glints of sunlight began to appear, reflected from the metal structures of the vast base below.

As the outlines of the surface installations materialized out of the gray background and expanded to fill the screen, a yellow glow in the center grew, gradually transforming into the gaping entrance to one of the underground moonship berths. There was a brief impression of tiers of access levels stretching down out of sight as huge service gantries swung back to admit the ship. Rows of brilliant arc lights flooded the scene before the exhaust from the braking motors blotted out the view. A mild jolt signaled that the landing legs had made contact with Lunar rock, and silence fell abruptly inside the ship as the engines were cut. Above the squat nose of the moonship, massive steel shutters rolled together to seal out the stars. As the berth filled with air, a new world of sound impinged on the ears of the ship's occupants. Shortly afterward, the access ramps slid smoothly from the walls to connect the ship to the reception bays.

Thirty minutes after clearing arrival formalities, Hunt emerged from an elevator high atop one of the viewing domes that dominated the surface of Ptolemy Main Base. For a long time he gazed soberly at the harsh desolation in which man had carved this oasis of life. The streaky blue and white disk of Earth, hanging motionless above the horizon, suddenly brought home to him the remoteness of places like Houston, Reading, Cambridge, and the meaning of everything familiar, which until so recently he had taken for granted. In his wanderings he had never come to regard any particular place as home; unconsciously he had always accepted any part of the world to be as much home as any other. Now, all at once, he realized that he was away from home for the first time in his life.