The flat afternoon sky spread over the black and gray mountains like a stage backdrop, the color of a dog’s pale crazy eye.

His ankles aching and back burning from a misplaced loop of nylon rope, Mitch Rafelson followed Tilde’s quick female form along the margin between the white firn and a dust of new snow on the field. Mingled with the ice boulders of the fall, crenels and spikes of old ice had been sculpted by summer heat into milky, flint-edged knives.

To Mitch’s left, the mountains rose over the jumble of black boulders flanking the broken slope of the ice fall. On the right, in the full glare of the sun, the ice rose in blinding brilliance to the perfect catenary of the cirque.

Franco was about twenty yards to the south, hidden by the rim of Mitch’s goggles. Mitch could hear him but not see him. Some kilometers behind, also out of sight now, was the brilliant orange, round fiberglass-and-aluminum bivouac where they had made their last rest stop. He did not know how many kilometers they were from the last hut, whose name he had forgotten; but the memory of bright sun and warm tea in the sitting room, the Gaststube, gave him some strength. When this ordeal was over, he would get another cup of strong tea and sit in the Gaststube and thank God he was warm and alive.

They were approaching the wall of rock and a bridge of snow lying over a chasm dug by meltwater. These now-frozen streams formed during the spring and summer and eroded the edge of the glacier. Beyond the bridge, depending from a U-shaped depression in the wall, rose what looked like a gnome’s upside-down castle, or a pipe organ carved from ice: a frozen waterfall spread out in many thick columns. Chunks of dislodged ice and drifts of snow gathered around the dirty white of the base; sun burnished the cream and white at the top.

Franco came into view as if out of a fog and joined up with Tilde. So far they had been on relatively level glacier. Now it seemed that Tilde and Franco were going to scale the pipe organ.

Mitch stopped for a moment and reached behind to pull out his ice ax. He pushed up his goggles, crouched, then fell back on his butt with a grunt to check his crampons. Ice balls between the spikes yielded to his knife.

Tilde walked back a few yards to speak to him. He looked up at her, his thick dark eyebrows forming a bridge over a pushed-up nose, round green eyes blinking at the cold.

“This saves us an hour,” Tilde said, pointing at the pipe organ. “It’s late. You’ve slowed us down.” Her English came precise from thin lips, with a seductive Austrian accent. She had a slight but well-proportioned figure, white blond hair rucked under a dark blue Polartec cap, an elfin face with clear gray eyes. Attractive, but not Mitch’s type; still, they had been lovers of the moment before Franco arrived.

“I told you I haven’t climbed in eight years,” Mitch said. Franco was showing him up handily. The Italian leaned on his ax near the pipe organ.

Tilde weighed and measured everything, took only the best, discarded the second best, yet never cut ties in case her past connections should prove useful. Franco had a square jaw and white teeth and a square head with thick black hair shaved at the sides, an eagle nose, Mediterranean olive skin, broad shoulders and arms knotted with muscles, fine hands, very strong. He was not too smart for Tilde, but no dummy, either. Mitch could imagine Tilde pulled from her thick Austrian forest by the prospect of bedding Franco, light against dark, like layers in a torte. He felt curiously detached from this image. Tilde made love with a mechanical rigor that had deceived Mitch for a time, until he realized she was merely going through the moves, one after the other, as a kind of intellectual exercise. She ate the same way. Nothing moved her deeply, yet she had real wit at times, and a lovely smile that drew lines on the corners of those thin, precise lips.

“We must go down before sunset,” Tilde said. “I don’t know what the weather will do. It’s two hours to the cave. Not very far, but a hard climb. If we’re lucky, you’ll have an hour to look at what we’ve found.”

“I’ll do my best,” Mitch said. “How far are we from the tourist trails? I haven’t seen any red paint in hours.”

Tilde pulled away her goggles to wipe them, gave him a flash smile with no warmth. “No tourists up here. Most good climbers stay away, too. But I know my way.”

“Snow goddess,” Mitch said.

“What do you expect?” she said, taking it as a compliment. “I’ve climbed here since I was a girl.”

“You’re still a girl,” Mitch said. “Twenty-five, twenty-six?”

She had never revealed her age to Mitch. Now she appraised him as if he were a gemstone she might reconsider purchasing. “I am thirty-two. Franco is forty but he’s faster than you.”

“To hell with Franco,” Mitch said without anger.

Tilde curled her lip in amusement. “We are all weird today,” she said, turning away. “Even Franco feels it. But another Iceman…what would that be worth?”

The very thought shortened Mitch’s breath, and he did not need that now. His excitement curled back on itself, mixing with his exhaustion. “I don’t know,” he said.

They had opened their mercenary little hearts to him back in Salzburg. They were ambitious but not stupid; Tilde was absolutely certain that their find was not just another climber’s body. She should know. At fourteen, she had helped carry out two bodies spit loose from the tongues of glaciers. One had been over a hundred years old.

Mitch wondered what would happen if they had found a true Iceman. Tilde, he was sure, would in the long run not know how to handle fame and success. Franco was stolid enough to make do, but Tilde was in her own way fragile. Like a diamond, she could cut steel, but strike her from the wrong angle and she would come to pieces.

Franco might survive fame, but would he survive Tilde? Mitch, despite everything, liked Franco.

“It’s another three kilometers,” Tilde told him. “Let’s go.”

Together, she and Franco showed him how to climb the frozen waterfall. “This flows only during midsummer,” Franco said. “It is ice for a month now. Understand how it freezes. It is strong down here.” He struck the pale gray ice of the pipe organ’s massive base with his ax. The ice linked, spun off a few chips. “But it is verglas, lots of bubbles, higher up — mushy. Big chunks fall if you hit it wrong. Hurt somebody. Tilde could cut some steps there, not you. You climb between Tilde and me.”

Tilde would go first, an honest acknowledgment by Franco that she was the better climber. Franco slung the ropes and Mitch showed them he remembered the loops and knots from climbing in the Cascades, in Washington state. Tilde made a face and retied the loop Alpine style around his waist and shoulders. “You can front most of the way. Remember, I will chisel steps if you need them,” Tilde said. “I don’t want you sending ice down on Franco.”

She took the lead.

Halfway up the pillar, digging in with the front points of his crampons, Mitch passed a threshold and his exhaustion seemed to leak away in spurts through his feet, leaving him nauseated for a moment. Then his body felt clean, as if flushed with fresh water, and his breath came easy. He followed Tilde, chunking his crampons into the ice and leaning in very close, grabbing at whatever holds were available. He used his ax sparingly. The air was actually warmer near the ice.