The hallucinations were gone, which was fine with him. He crawled through 
the tunnels for a long time. If he tried to think about where he was going, he 
got lost and eventually circled back to where he started. Only when his mind 
began to wander did he make his way on some kind of autopilot to a long chamber 
filled with silvery light, sloping upward. This was beginning to look familiar, 
he had seen this when he was still a young man. He followed it upward until he 
reached the end, where something unusually stony was under his feet. A hatch 
opened above him, and several tons of cold seawater landed on his head.