Then all at once the spell was broken by an access of gnawing, indeterminate panic fear. Blake choked and turned away from the stone, conscious of some formless alien presence close to him and watching him with horrible intentness. He felt entangled with something—something which was not in the stone, but which had looked through it at him—something which would ceaselessly follow him with a cognition that was not physical sight. Plainly, the place was getting on his nerves—as well it might in view of his gruesome find. The light was waning, too, and since he had no illuminant with him he knew he would have to be leaving soon.