He couldn’t stay there long. His hands would stiffen up and become useless.

He rerigged the tank to his back and checked the fittings and faceplate of the mask. If they were damaged, that was it. The mask had somehow survived banging against the tank. Now he began the slow climb up the corner between the side of the shaft, and the boulder wall under which the river had disappeared. As before, there were many foot– and handholds, but it was all friable rottenrock, chunks of which came off in his hands, and grains of stone worked their way into his skinless palms. His heart thumped convulsively in his chest, squirting throbs of blood into his temples. When at last he made the fiat ledge between two counterbalanced boulders that was the keyhole to the Climbing Cave, he lay out flat on his stomach and rested, his cheek against the rock and saliva dripping from the corner of his mouth.

He cursed himself for resting there too long. His palms were growing sticky with scab fluid, and they hinged awkwardly, like lobster claws. He got to his feet and stood there, opening and closing his hands, breaking through the crusts of pain, until they articulated smoothly again.

For an immeasurable time, he stumbled forward through the Climbing Cave, feeling his way around the house-sized boulders that dwarfed him, squeezing between counterbalanced slabs of recent infall from the scarred roof far above the throw of his helmet light, edging his way along precariously perched rocks that would long ago have surrendered to gravity, had they been subjected to the weather erosion of the outside. The river was no guide, lost far below the jumble of infall, ravelled into thousands of threads as it found its way along the schist floor of the cavern. Three times, in his fatigue and stress, he lost his way, and the terror of it was that he was wasting precious energy stumbling around blindly. Each time, he forced himself to stop and calm himself, until his proximity sense suggested the path toward open space.

At last, there was sound to guide him. As he approached the end of the Climbing Cave, the threads of water far below wove themselves together, and slowly he became aware of the roar and tympani of the great waterfall that led down to the Crystal Cave. Ahead, the roof of the cave sloped down and was joined by a blocking wall of jagged, fresh infall. Making it up that wall, through the insane network of cracks and chimneys, then down the other side through the roaring waterfall without the safety of a belay from Le Cagot would be the most dangerous and difficult part of the cave. He would have to rest before that.

It was then that Hel had slipped off the straps of his air tank and sat down heavily on a rock, his chin hanging to his chest as he gasped for air and sweat ran from his hair into his eyes.

He had taken a long drink from his xahako, then had lain back on the slab of rock, not bothering to take off his helmet.

His body whimpered for rest. But he mustn’t sleep. Sleep is death. Just rest for a moment. Not sleep. Just close your eyes for a moment. Just close… eyes…

“Ahgh!” He started awake, driven from his shallow, tormented sleep by the image of Le Cagot’s helmet light rushing down toward him from the roof of the cave! He sat up, shivering and sweating. The thin sleep had not rested him; fatigue wastes in his body were thickening up; his hands were a pair of stiff paddles; his shoulders were knotted; the nausea of repeated adrenaline shock was clogging his throat.

He sat there, slumped over, not caring if he went on or not. Then, for the first time, the staggering implications of what Diamond had said over the phones burst upon his consciousness. His château no longer existed? What had they done? Had Hana escaped?

Concern for her, and the need to avenge Le Cagot, did for his body what food and rest might have done. He clawed his remaining glucose cubes from the pouch and chewed them, washing them down with the last of his water-wine. It would take the sugar several minutes to work its way into his bloodstream. Meanwhile, he set his jaw and began the task of limbering up his bands, breaking up the fresh scabbing, accepting the gritty sting of movement.

When he could handle it, he slung the air tank on and began the hard climb up the jumble of infall that blocked off the mouth of the Crystal Cave. He recalled Le Cagot telling him to try a bit to the left, because he was sitting in the line of fall and was too comfortable to move.

Twice, he had to struggle out of the tank harness while clinging to scant points of purchase because the crack he had to wriggle through was too tight for a man and tank at once without risking damage to the mask slung from his chest. Each time, he took care to tie the tank securely, because a fall might knock off its fitting, exploding the cylinder and leaving him with no air to make the final cave swim and making all this work and torture futile.

When he achieved the thin ledge directly above the roaring waterfall, he directed his lamp down tire long drop, up which mist rose and billowed in the windless air. He paused only long enough to catch his breath and slow his heartbeat. There could be no long rests from now on, no chances for his body and hands to stiffen up, or for his imagination to cripple his determination.

The deafening roar of the falls and the roiling 40° mist insulated his mind from any thoughts of wider scope than the immediate task. He edged along the slimy, worn ledge that had once been the lip of the waterfall until be found the outcrop of rock from which Le Cagot had belayed him during his first descent along the glistening sheet of falling water. There would be no protecting belay this time. As he inched down, he came upon the first of the pitons he had driven in before, snapped a carabiner into the first and tied off a doubled line, threading and snapping in another at each piton, to shorten his fall, should he come off the face. Again, as before, it was not long before the combined friction of the line passing through these snap links made pulling it through difficult and dangerous, as the effort tended to lift him from the scant boot jams and fingerholds the face provided.

The water and the rope tortured his palms, and he clutched at his holds ever harder and harder, as though to punish the pain with excess. When he reached the point at which he would have to break through the sheet of water and pass behind the falls, he discovered that he could no longer drag down slack. The weight of water on the line, the number of carabiners through which it was strung, and his growing weakness combined to make this impossible. He would have to abandon the rope and climb free from here on. As before, he reached through the silver-and-black surface of the falls, which split in a heavy, throbbing bracelet around his wrist. He felt for and located the sharp little crack, invisible behind the face of the falls, into which he had wedged his fingers before. Ducking through the falls would be harder this time. The tank presented additional surface to the falls; his fingers were raw and numb; and his reserves of strength were gone. One smooth move. Just swing through it. There is a good ledge behind the cascade, and a book corner piled with rubble that made an easy climb down. He took three deep breaths and swung under the face of the falls.

Recent rains had made the falls twice as thick as before and more than twice as heavy. Its weight battered his helmet and shoulders and tried to tear the tank from his back. His numbed fingers were pried from the sharp crack; and he fell.

The first thing he became aware of was the relative quiet. The second thing was the water. He was behind the falls, at the base of the seres pile, sitting hip-deep in water. He may have been unconscious for a time, but he had no sense of it. The events were strung together in his mind: the battering of the water on his back and tank; the pain as his skinless fingers were wrenched from their hold; clatter, noise, pain, shock as he fell to the rubble pile and tumbled down it—then this relative silence, and waist-deep water where, before, there had been wet rock. The silence was no problem; he was not stunned. He had noticed last time how the falls seemed to muffle the roar once he was behind it. But the water? Did that mean recent rains had seeped down, making a lake of the floor of the Crystal Cavern?