In the flick of a second Hyrst went blind and deaf. Then he realized that it was only his mental eyes and ears that were blanked out as though a curtain had been drawn across them. His physical eyes were still clear and sharp, and when Shearing's voice came over the helmet audio he heard it without trouble.
"This is called the cloak. I suppose you could call it an extension of the shield, though it's more like a force field. It's no bar to physical vision, and it has the one great disadvantage of being opaque both ways to mental energy. But it does act as a deflector. If Vernon follows us now, he'll have to do it the hard way. Stick close by me, so I don't have too wide a spread. And it'll be up to you to lead. I can't do both. Let's go."
Hyrst had, unconsciously, become so used to his new perceptions that it made him feel dull and helpless to be without them. He led off down one of the smooth rock avenues, going away from the skiff and the tug which had just landed.
On either side of the avenue were monoliths, irregularly spaced and of different sizes and heights but following an apparently orderly plan. The light of the distant sun lay raw and blinding on them, casting shadows as black and sharp-edged as though drawn upon the rock with india ink.
You could see faces in the monoliths. You could see mighty outlines, singly and in groups, of gods and beasts and men, in combat, in suppliance, in death and burial. That was why these asteroids were called Valhallas. Twenty-six of them had been found so far, and studied, and still no one could say certainly whether or not the hands of any living beings had fashioned them. They might be actual monuments, defaced by cosmic dust, by collision with the myriad fragments of the Belt, by time. They might be one of Nature's casual jokes, created by the same agencies. No actual tombs had been found, nor tools, nor definitely identifiable artifacts. But still the feeling persisted, in the airless silence of the avenues, that some passing race had paused and wrought for itself a memorial more enduring than its fame, and then gone on into the great galactic sea, never to return.
Hyrst had never been on a Valhalla before. He understood why Shearing had not wanted to land and he wished now that they hadn't. There was something overwhelmingly sad and awesome about these leaning, towering figures of stone, moving forever in their lonely orbit, going nowhere, returning to nowhere.
Then he saw the second tug overhead. He forgot his daydreams. "They're going to act as a spotter," he said. Shearing grunted but did not speak. His whole mind was concentrated on maintaining the cloak. Hyrst stopped him still in the pitchy shadow under what might have been a kneeling woman sixty feet high. He watched the tug. It lazed away, circling slowly, and he did not think it had seen them. He could not any longer see the place where they had landed, but he assumed that by now the yacht had looped back and come in—if not there somewhere close by. They could figure on nine to eleven men hunting them, depending on whether they left the ships guarded or not. Either way, it was too many.
"Listen," he said aloud to Shearing. "Listen, I want to ask you. What you said about latent impressions—you think I might have seen and heard the killer even though I was unconscious?"
"Especially heard. Possible. With your increased power, and ours, impressions received through sense-channels but not recognized at the time or remembered later might be recovered." He shook his head. "Don't bother me."