The transition from one room to the other shocked him, although he could explain how it happened. On jumping through the hoop into this room, he had triggered a delayed gate. This, activated, had sent him into this seemingly blind-alley chamber.
The light had no visible source; it filled the room with equal intensity. It was bright enough so that he could see that there were no cracks or flaws in the walls. There was nothing to indicate a window or door. And the walls were made of sturdy stuff. The ray from the beamer, turned to full power, only warmed the wall and the air in the chamber. He turned the weapon off and looked for the source of air, if there was one.