Stanton rounded the corner of a pile of masonry. He could see the animal now himself. The deer stared at the intruder for a few seconds, then bounded away with long, graceful leaps.

"Magnificent animal." It was Stanton's voice, very low. The remark wasn't directed toward anyone in particular. Captain Greer didn't answer.

The captain lit a cigarette and leaned back in his chair, his eyes on the screens. The Nipe still sat, unmoving. He was apparently in one of his "sleep" states. The captain wasn't sure that that was the blessing that it might have seemed. He had no way of knowing how much external disturbance it would take to "wake" the Nipe, and as long as he was sitting quietly, the chances were greater that he would hear movement in the tunnel. If he were active, his senses might be more alert, but he would also be distracted by his own actions and the noises he made himself.

It didn't matter, the captain decided. One way was as good as another in this case. The point was to get Stanton into an advantageous position before the Nipe knew he was anywhere around.

He looked back at the image of Stanton, a black-clad figure in a flexible, tough, skin-tight suit. The Nipe would have a hard time biting through that artificial hide, but it gave Stanton as much freedom as if he'd been naked.

Stanton knew where he was going. He had studied maps of the area, and had been taken on a vicarious tour of the route by means of the very flying eye that was watching him now. But things look different from the ground than from the air, and no amount of map study will familiarize a person with terrain as completely as an actual personal survey.

Stanton paused, and Captain Greer heard his voice. "Barhop, this is Barbell. Those are the cliffs up ahead, aren't they?"

"That's right, Barbell. You go up that slope to your left. The opening is in that pile of rock at the base of the cliff."

"They're higher than I'd thought," Stanton commented. Then he started walking again.

The tunnel entrance he was heading for had once been a wide opening, drilled laterally into the side of the cliff, and big enough to allow easy access to the tunnels, so that the passengers of those old underground trains could get to the platforms where they stopped. But the sun bomb had changed all that. The concussion had shaken loose rock at the top of the cliff and a minor avalanche had obliterated all indications of the tunnel's existence, except for one small, narrow opening near the top of what had once been a wide hole in the face of the cliff.