He caught the impulse to flee, held it in check. It was like trying to hold back a tidal wave. "This is an interesting effect," he said. "Does the generator have the same effect on all people?" West grunted and walked ahead without answering the question. Zen thought the grunt held an approving tone. Nedra squeezed his arm but said nothing. The craggy man did not point out the second generator, but Zen felt the radiations hit him, stronger than before. He was mentally prepared this time, but his body wasn't. He felt his muscles tie themselves into knots. The impulse to run was a screaming ululation of mad wolf intensity pouring into his consciousness. Zen kept on walking. As abruptly as he had entered it, he was out of the radiation zone. Up ahead of him, West did not grunt or change his pace. Except for Nedra's fingers digging into his arm, Zen had no indication that either felt the radiation. What kind of people were they, to be able to walk through hell and be uninfluenced by it? Zen wondered as he wiped sweat off his forehead. Ahead, West grunted and played his light on the side wall. The craggy man grunted again. On the right, the side wall began to swing back as a door opened there. From the tunnel the wall looked like solid stone, but as the door opened, the back was seen to be made of metal. A lighted tunnel leading to a large gallery lay beyond. "Enter," West said. "Who did all of this?" Zen inquired. "Jal Jonner took over the title to this old mine. He and his men sealed off the deeper tunnels, enlarged them, provided an air supply, built laboratories and living quarters, and made a comfortable hidden world here." Zen felt he should have known better than to ask. According to these people, Jal Jonner had done everything, except lay the foundations of the world. "I see," the colonel said. "He did all of this before he died." None of the reports he had read had mentioned this activity, or had even hinted at it, but he did not see fit to mention this. "No," West denied. "But you just said--" "He did it after he died," the craggy man explained. "Huh?" Zen said. "Pardon me, but I did not seem to hear you clearly. I thought you said he did this after he died." "That's what I said. That's what he did." The craggy man's voice was calm. "I--uh--" Zen hastily changed his mind about the words he was going to use. Secretly he was wondering if West was hopelessly insane. How could a dead man build anything? "You understand that I am not too familiar with what actually happened. Sorry and all that but I simply haven't had to learn." "I understand," West said. "You don't need to apologize. You will learn here." "Good," Zen said. He doubted if he felt better because his explanation had been accepted. West's last words had an ominous ring to them. "Your lack of familiarity with Jonner's history is very obvious," West continued. "But if he was dead--"