The doctor led the three soldiers through a series of passageways. In the wan lantern light McDivett could see the rough ancestry of the stone. It was a charcoal grey, laced with filaments of green. The walls, however, were coated with a strange slippery substance that was tacky to the touch. "Goo," Murphy voiced as he wiped his fingers on his fatigues. "The stones weep," said Rictor. "It is odd. Most people envision the desert to be a dry, lifeless place. But you would be surprised how alive such a place can be." McDivett tried to keep track of the series of turns they had made. Whoever had built this ancient structure, had built it to last. It had the size and feel of a fortress. Some of the openings were barely visible until they were upon them. Over all, they seemed to be heading in