For twenty minutes they clambered through the mechanical jungle, twisting and turning among the chaotic shadows cast by the lights pouring in through the hole above. Progress was slow; they had difficulty finding level surfaces to move on, since the ship appeared to be lying on its side. But foot by foot, the lines continued to snake sporadically down into the darkness. Eventually the sergeants stopped before the noseward bulkhead of the compartment. The screens outside showed their way barred by a door leaking through to whatever lay forward; it was made of a steely-gray metal and looked solid. It was also about ten feet high by four wide. A long conference produced the decision that there was no alternative but for them to return to where the hole had been cut to collect drills, torches, and all the other gadgetry needed to go through the whole drilling, purging, argon-filling, and cutting routine all over again. From the look of the door, it could be a long job. Mills, Stanislow, and Peters went back to the control room, collected the remainder of their party, and went to the surface installations for lunch. They returned three hours later.

Behind the bulkhead was another machinery compartment, as confusing as the first but larger. This one had many doors leading from it—all closed. The two sergeants selected one at random in the ceiling above their heads, and while they were cutting through it, others descended into the first and second compartments to position rollers for minimizing the drag of their trailing cables, which was beginning to slow them down appreciably. When the door was cut, a second team relieved the first.

They used another ladder to climb up through the door and found themselves standing on what was supposed to be the wall of a long corridor running toward the nose of the ship. A succession of closed doors, beneath their feet and over their heads, passed across the screens outside. Over two hundred feet of cabling had disappeared into the original entry point.

"We're just passing the fifth bulkhead since entering the corridor," the commentary on the audio channel informed the observers. "The walls are smooth, and appear to be metallic, but covered with a plastic material. It's coming away in most places. The floor up one side is black and looks rubbery. There are lots of doors in both walls, all big like the first one. Some have . . ."

"Just a second, Joe," the voice of the speaker's companion broke in. "Swing the big light down here . . . by your feet. See, the door you're standing on slides to the side. It's not closed all the way."