Somo frowned, then spun about and left the chamber.

A quarter hour later they said goodbye to the little plateau, leaving Lin and Anya with food for only two more meals. Shan nodded a farewell to the colonel, who still sat at the stunted tree. Lin scowled back. Anya stood apart as they left. She had begun one of her songs that had the sound of mourning, and for a moment he tried in vain to read her face, to understand what truth she had glimpsed this time. When Shan looked back she was standing at the very edge of the rim, looking down into the abyss.

The Green Tara seemed to be running a dormitory. Chemi was there, with her Uncle Dzopa, still nearly comatose, and more than a dozen of the Tibetans Shan had first seen at the camp behind Yapchi village. The rongpa were speaking in excited tones of the spring festival and the miraculous escape of the abbot of Sangchi, sitting beside Tenzin, asking for his blessing. People were coming from many miles away, they said, gathering on the mountain, saying what happened at Norbu was a portent of what would happen when the seat of Siddhi was at last occupied.

Shan listened with foreboding, which only increased as he saw Lokesh and Winslow talking in urgent tones with several purbas who arrived carrying packs of supplies. Jokar was still at Yapchi, they confirmed, and even allowed to walk about, although one of Lin's soldiers was always at his side. The camp manager had asked for a doctor to come and examine the frail old lama, but Jokar had refused to be examined. Lhandro's parents were with him, or near him- not prisoners, but refusing to leave him. "They just stay at that dig with that Chinese professor," Larkin reported.

"You were there?" Shan asked. He surveyed the cave again. The laboratory equipment, and the older Tibetan men who had looked like professors were gone.

"On the ridge above," the American woman replied. "Yesterday. Taking measurements. We had binoculars. Many more soldiers are in the camp. They put up a checkpoint, at the entrance to the valley. They want to stop anyone from coming in on the road. They have patrols deployed on the slopes above the camp."

"Measurements?" Shan asked, looking from Larkin to Winslow. "But you're not still looking for oil."

Larkin ignored him. Winslow put his palms up as though to disavow any knowledge. But Shan saw a new map on the rock slab, a map bearing the name of the petroleum venture, a detailed relief map of Yapchi Valley and the route leading from the main highway. He stepped over to it. Along the southern slope of the valley were several new dotted lines, each in different colors. Larkin stepped past him and covered it with a large-scale map of Qinghai Province.

Nyma walked from the group of purbas to Shan. "At the camp everyone says they expect oil tomorrow or the next day," she reported in a tone of resignation.

The words had the sound of an epitaph. It would be over when Jenkins's crews struck oil. The fate of the valley would be sealed. The slopes would be completely stripped of their timber. The fields of barley would be ruined by the venture's machines. The songs of the lark would be replaced with the sound of engines, the fragrance of the spring flowers with acrid fumes.

"Less than twenty-four hours," Larkin nodded grimly. "There is a convoy coming in, of high officials. People from Lhasa, and Golmud, for the big celebration."

Nyma looked back at the purba who lay on the pallet. "Who took the bullet out?" she asked.

"I did," Larkin said. "There wasn't anyone else. He bit a piece of leather rope as I worked. Just in the muscle. Lokesh says his blood is still strong."

Shan looked at the wounded purba in alarm. A bullet. With a sinking heart he noticed one of the army's automatic rifles on the ledge above the man.

He studied Larkin again, remembering how frustrated she had been when they had had to leave the explosives behind. "You can't," he heard himself say with sudden despair. "All these people," he said, gesturing toward the refugees in the cave. "They have suffered enough."

Larkin met his stare. "Cowboy has their names and registration numbers. He's going to make sure they get relocated properly. Next time he's in Tibet, he's going to report back to me."

Winslow looked up, grinning at Shan. Cowboy.

There was a murmur of surprise from across the room. Shan looked up to see six large Tibetan men enter in pairs, each pair carrying a heavy wooden box slung from a stout pole. Larkin stood and stepped forward to help the men stack the boxes at the rear of the cave.

"There was an accident," Somo said at his side, in an uncertain, worried tone. "They were laughing because they said a company truck slid off the road."

Shan stepped away and circled back, away from Larkin, to get closer to the boxes. They were marked in Chinese. Qinghai Petroleum Venture, they said. High Explosives. He wandered outside, fighting the sense of defeat that seemed to have overtaken Nyma and Lhandro, then found Winslow at the mouth of the cave, standing over the churning water of the buried river.

"Some of the Tibetans are very superstitious about this place," the American said. "They say it is a connecting place."

"Connecting?"

"I don't understand all the words I heard. One of them said it was a gate. I think they mean to another universe, one of the hidden lands. The bayal. Melissa said Tibetans believe there are many worlds inhabited by humans, some not visible to most of us, and many different types of heavens and hells. Nyma said years ago, before she was born, an old nun who lived nearby brought her students here and announced she had been called to speak with a deity that lived in the hidden land past this gate. Then she just jumped in."

Shan followed Winslow's gaze toward the maelstrom below. Larkin's secret river. Somehow, he thought, it wouldn't be the same when the geologists put a name to it and fixed it on their maps. In a wild and largely untamed land this was one of its wildest and most untamed parts. It was like a whirlpool, he thought, a dark whirlpool that had sprung up on dry land. He imagined the water rushing down, roiling through its hidden course. Perhaps they were looking at the top of a waterfall that dropped through a vast underground cavern into a lake where nagas lived. Perhaps there was indeed a hidden land beyond, and a hermit in that land was sitting on a rock looking up at the waterfall, wondering about the world that lay above it. Perhaps this was where the chenyi stone belonged. Perhaps in that world deities were not so hard to find.

"Larkin will be in grave danger," he said suddenly, pulling his gaze from the mesmerizing waters, "if she lets her camp become the base for saboteurs."

"She's not just a geologist," Winslow said absently, still watching the water.

"There are only two things they can do with those explosives," Shan pointed out. "Try to attack the camp, maybe ruin it with an avalanche. Or put them on the road into the camp, when that convoy of dignitaries comes. Either way it won't solve anything."

"It's the road. It must be," Winslow said, his eyes heavy with worry. "But they wouldn't deliberately kill all those people. Just block it."

"It will just bring more soldiers," Shan said. "More arrests. Zhu hasn't given up looking for Larkin. When he has soldiers to help he will find this place. When soldiers come the people here won't just be refugees, they'll be treated like enemies of the state. They will come to make arrests, they will come to attack."