Sighing, he reversed his earlier procedure in sliding down other poles. With only one good arm, pulling himself up was slow work. It was, perhaps, only the fact that the levels were constructed to suit beings five feet tall that made it possible for him to make it to the next level up. He sat with his legs dangling through the opening, panting, while perspiration oozed out to bead his forehead.
This time, he was nearly half an hour in recovering and working up the determination required to go on. The corridor in which he found himself ran at right angles to the one below. It was wider and higher, as if more traveled, but any such open area as he had peeped at was far to the rear. Nearby, however, was a much larger door than he had yet encountered. He walked over to it.
When a tentative push produced no results, he dipped his left hand into a pocket for the black disk.
He seemed to have a good idea of where to locate the hinges on this door too. When he had burned through, the door was harder to shove aside because it turned out to be of double thickness. The hinges had been concealed from both inside and outside. The tall man now found himself only a few steps from another such portal, in what looked like an anteroom.
Methodically, he proceeded to burn his way through, squinting in the bright light of the flame but otherwise betraying no emotion.
The last door fell away. Fresh air billowed in around him, and he could see stars in a night sky outside.
Without haste, he stepped outside.
The tan, plastery wall reared above him for about ten levels. Off to his left, shadows on the ground showed a jagged shape, so it was probable that another part of the building towered upward after a set-back. The ground around the exit was perfectly level and bare of any vegetation. The nearest life was a wall of shrub-like trees about a hundred feet away, and toward these the man began to walk in the same tired pace.
He found, as if by instinct, a broad, well-kept path through the trees. A mild breeze caused the long, hanging leaves to rustle. Without looking back, the man followed the path up a gentle slope and over the curve of the hill. At the bottom of the downgrade, two figures shrank suddenly back into the shadows. He kept walking.
"That you, Gerson?" came a loud whisper, as the two Terrans stepped forward again. "Come on; we have an aircar over here! Did anyone follow you?"