meal they had had in Hell. When they finally moved away from the devastated nest, Honath felt better than he had since the day he was arrested.
As they moved on down the gorge, they began again to hear the roar of water, though the stream looked as placid as ever. Here, too, they saw the first sign of active life in the valley: a flight of giant dragonflies skimming over the water. The insects took fright as soon as Honath showed himself, but quickly came back, their nearly non-existent brains already convinced that there had always been men in the valley.
The roar got louder very rapidly. When the three rounded the long, gentle turn which had cut off their view from the exit, the source of the roar came into view. It was a sheet of falling water as tall as the depth of the gorge itself, which came arcing out from between two pillars of basalt and fell to a roiling, frothing pool.
“This is as far as we go!” Alaskon said, shouting to make himself heard over the tumult. “We’ll never be able to get up these walls!”
Stunned, Honath looked from side to side. What Alaskon had said was all too obviously true. The gorge evidently had begun life as a layer of soft, partly soluble stone in the cliffs, tilted upright by some volcanic upheaval, and then worn completely away by the rushing stream. Both cliff faces were of the harder rock, and were sheer and as smooth as if they had been polished by hand. Here and there a network of tough vines had begun to climb them, but nowhere did such a network even come close to reaching the top.
Honath turned and looked once more at the great arc of water and spray. If there were only some way to prevent their being forced to retrace their steps—
Abruptly, over the riot of the falls, there was a piercing, hissing shriek. Echoes picked it up and sounded it again and again, all the way up the battlements of the cliffs. Honath sprang straight up in the air and came down trembling, facing away from the pool.
At first he could see nothing. Then, down at the open end of the turn, there was a huge flurry of motion.
A second later, a two-legged, blue-green reptile half as tall as the gorge itself came around the turn in a single bound and lunged violently into the far wall of the valley. It stopped as if momentarily stunned, and the great grinning head turned toward them a face of sinister and furious idiocy.
The shriek set the air to boiling again. Balancing itself with its heavy tail, the beast lowered its head and looked redly toward the falls.
The owner of the robbed nest had come home. They had met a demon of Hell at last.
Honath’s mind at that instant went as white and blank as the under-bark of a poplar. He acted without thinking, without even knowing what he did. When thought began to creep back into his head again, the three of them were standing shivering in semidarkness, watching the blurred shadow of the demon lurching back and forth upon the screen of shining water.
It had been nothing but luck, not foreplanning, to find that there was a considerable space between the back of the falls proper and the blind wall of the canyon. It had been luck, too, which had forced Honath to skirt the pool in order to reach the falls at all, and thus had taken them all behind the silver curtain at the point where the weight of the falling water was too low to hammer them down for good. And it had been the blindest stroke of all that the demon had charged after them directly into the pool, where the deep, boiling water had slowed its thrashing hind legs enough to halt it before it went under the falls, as it had earlier blundered into the hard wall of the gorge.
Not an iota of all this had been in Honath’s mind before he had discovered it to be true. At the moment that the huge reptile had screamed for the second time, he had simply grasped Mathild’s hand and broken for the falls, leaping from low tree to shrub to fern faster than he had ever leapt before. He did not stop to see how well Mathild was keeping up with him, or whether or not Alaskon was following. He only ran. He might have screamed, too; he could not remember.
They stood now, all three of them, wet through, behind the curtain until the shadow of the demon faded and vanished. Finally Honath felt a hand thumping his shoulder, and turned slowly.
Speech was impossible here, but Alaskon’s pointing finger was eloquent enough. Along the back wall of the falls, where centuries of erosion had failed to wear away completely the original soft limestone, there was a sort of serrated chimney, open toward the gorge, which looked as though it could be climbed. At the top of the falls, the water shot out from between the basalt pillars in a smooth, almost solid-looking tube, arching at least six feet before beginning to break into the fan of spray and rainbows which poured down into the gorge. Once the chimney had been climbed, it should be possible to climb out from under the falls without passing through the water again.
And after that—?
Abruptly, Honath grinned. He felt weak all through with reaction, and the face of the demon would probably be grinning in his dreams for a long time to come. But at the same time he could not repress a surge of irrational confidence. He gestured upward jauntily, shook himself, and loped forward into the throat of the chimney.
Hardly more than an hour later they were all standing on a ledge overlooking the gorge, with the waterfall creaming over the brink next to them, only a few yards away. From here, it was evident that the gorge itself was only the bottom of a far greater cleft, a split in the pink-and-grey cliffs as sharp as though it had been riven in the rock by a bolt of sheet lightning. Beyond the basalt pillars from which the fall issued, however, the stream foamed over a long ladder of rock shelves which seemed to lead straight up into the sky.
“That way?” Mathild said.
“Yes, and as fast as possible,” Alaskon said, shading his eyes. “It must be late. I don’t think the light will last much longer.”
“We’ll have to go single file,” Honath added. “And we’d better keep hold of each other’s hands. One slip on those wet steps and—it’s a long way down again.”
Mathild shuddered and took Honath’s hand convulsively. To his astonishment, the next instant she was tugging him toward the basalt pillars.
The irregular patch of deepening violet sky grew slowly as they climbed. They paused often, clinging to the jagged escarpments until their breath came back, and snatching icy water in cupped palms from the stream that fell down the ladder beside them. There was no way to tell how far up into the dusk the way had taken them, but Honath suspected that they were already somewhat above the level of their own vine-web world. The air smelled colder and sharper than it ever had above the jungle.
The final cut in the cliffs through which the stream fell was another chimney. It was steeper and more smooth-walled than the one which had taken them out of the gorge under the waterfall, but narrow enough to be climbed by bracing one’s back against one side, and one’s hands and feet against the other. The column of air inside the chimney was filled with spray, but in Hell that was too minor a discomfort to bother about.
At long last Honath heaved himself over the edge of the chimney onto flat rock, drenched and exhausted, but filled with an elation he could not suppress and did not want to. They were above the attic jungle; they had beaten Hell itself. He looked around to make sure that Mathild was safe, and then reached a hand down to Alaskon. The navigator’s bad leg had been giving him trouble. Honath heaved mightily and Alaskon came heavily over the edge and lit sprawling on the high mesa.
The stars were out. For a while they simply sat and gasped for breath. Then they turned, one by one, to see where they were.
There was not a great deal to see. There was the mesa, domed with stars on all sides and a shining, finned spindle,
