The treefolk hiked long and hard, following a line on the broad crest that minimized the ups and downs, nearly running along a rock road that Thel judged to be some three thousand feet above the sea. After a few days, the south side of the sinuous peninsula became a fairly gentle slope, cut by ravines and covered with tall redwood trees; in places on this side the beach was a wide expanse, dotted with ponds and green with rippling dune grass. The north side, on the other hand, remained a nearly vertical cliff, falling directly into waves, which slapped against the rock unbroken and sent bowed counterwaves back out to the north, stippling the blue surface of the water with intersecting arcs.
Once their ridge road narrowed, and big blocky towers of pink granite stood in their way. The trail reappeared then, on the sunny southern slope, and they followed it along a contoured traverse below the boulders, passing small pools that looked hacked into the rock. Half a day of this and they had passed the sharp peaks and were back on the ridge, looking ahead down its back as it snaked through the blue ocean. “How long is this peninsula?” Thel asked, but they only stared at him.
Every morning at sunrise Julo ordered young Garth to provide a shoulder apple for Thel’s consumption, and in the absence of any other food Thel accepted it and ate hungrily. He saw no more hallucinations, but each time experienced a sudden flush of pinkness in his vision, and felt the bitter tang of the taste to his bones. His right shoulder began to ache as he lay down to sleep. He ignored it and hiked on. He noticed that on cloudy days his companions hiked more slowly, and that when they stopped by pools to rest on those days, they took off their boots and stuck their feet between cracks in the rock, looking weary and relaxed.
Some days later the peninsula took a broad curve to the north, and for the first time the sun set on the south side of it. They stopped at a hut set on a particularly high knob on the ridge, and Thel looked around at the peninsula, splitting the ocean all the way to the distant horizon. It was a big world, no doubt of it; and the days and nights were much longer than what he had been used to, he was sure. He grew tired at midday, and often woke for a time in the middle of the long nights. “It doesn’t make sense,” he said to Garth, waving, perplexed at the mountainous mound zigzagging across the sea. “There isn’t any geological process that could create a feature like this.”
This was said almost in jest, given the other more important mysteries of his existence. But Garth stared at him, eyes feverish. He was lying exhausted, his feet deep in a crack; seeing this in the evenings Thel always resolved not to eat, and every morning he awoke too ravenous to refuse. Now, as if to pay Garth back with conversation, he added, “Land floats like wood, thick cakes of it drifting on slow currents of melted rock below, and a peninsula like this, as tall as this… I suppose it could be a mid-oceanic ridge, but in that case it would be volcanic, and this is all granite. I don’t understand.”
Garth said, “It’s here, so it must be possible.”
Thel laughed. “The basis of your world’s philosophy. You didn’t tell me you were a philosopher.”
Garth smiled bitterly, “Live like me and you too will become one. Maybe it’s happening already, eh? Maybe before you swam ashore you didn’t concern yourself with questions like that.”
“No,” Thel said, considering it. “I was always curious. I think.” And to Garth’s laugh: “So it feels, you see. Perhaps not everything is gone.” It seemed possible that the questions came from the shattered side of his mind, from some past self he couldn’t recall but which shaped his thinking anyway. “Perhaps I studied rock.”
At sunset the wind tended to die, just as the sunrise quickened it; now it slackened. Perhaps I have died like the wind, he thought; perhaps the only thing that survives after death are the questions, or the habit of questioning.
The two of them watched the sun sink, just to the left of the bump of the spine on the horizon. “It’s as if it’s a river in reverse,” Thel said. “If a deep river ran across a desert land, and then you reversed the landscape, water and earth, you would get something that looked like this.”
“The earth river,” Garth said. “The priests of the bird-folk call it that.”
“Are there any tributaries? Any lakes-turned-into-islands?”
“I’ve never seen any.”
The air darkened and the salt air grew chill. Garth was breathing deeply, about to fall asleep, when he said in a voice not his, a voice pleasant but at the same time chilling: “Through mirrors we see things right way round at last.”
In the days that followed, this image of a landscape in reverse haunted Thel, though in the end it explained nothing. The stony spine continued to split the water, and it got taller, the south side becoming as steep as the north again. In places they walked on a strip of level granite no wider than a person, and on each side the cliffs plunged some five thousand feet into white foam tapestries that shifted back and forth over deep water, as if something below the blue were lightly breathing: it disturbed one’s balance to look down at it, and though the strip was wide enough to walk on comfortably, the sheer airiness of it gave Thel vertigo. Garth walked over it with a pinched expression, and Julo laughed at him, cuffed him hard so that he had to go to his knees to avoid falling over the side; then Julo forced him to walk backwards, which served the others as amusement.
Eventually the north side grew less steep, laying out until the peninsula was wider than ever. In this section a hot white cliff faced south, a cool forested slope faced north. On the north slope were scattered stands of enormous evergreens, the tallest trees three or four hundred feet high. One of these giants stood on a ledge just below the crest, and had grown up above the ridge, where the winds had flattened it so that its branches grew horizontally in all directions, some laying over the ridge, others fanning out into the air over the beach and the sea far below.
The treefolk greeted this flat-topped giant as an ancestor, and clambered out over the horizontal branches to the tree’s mighty trunk, over it, and out the other side. They ended up on three or four lightning-blasted gnarly branches, ten feet wide and so solid that jumping up and down would not move them, though the whole tree swayed gently in a fitful west wind. Big shallow circular depressions had been cut into the tops of these branches, and the exposed wood had been polished till it gleamed.
They spent the night in these open-roofed rooms, under the star-flooded sky. By starlight Thel looked at the wood by his head and saw the grain of centuries of growth exposed. The peninsula had been here for thousands of years, millions of years—both the plant life and the erosion of the granite showed that. But how had it begun? “When you talk among yourselves about the spine,” he said to the treefolk, “do you ever talk about where it came from? Do you have a story that explains it?”
Julo was looking down into the grain of the floor beneath him, still and rapt as if he had not heard Thel; but after a while he said, in a low voice, “We tell a story about it. Traveling in silent majesty along their ordered ways, the gods tree and snake were lovers in the time without time. But they fell into time, and snake saw a vision of a lover as mobile as he, and he chased round the sky until he saw the vision was his own tail. He bit the tail in anger and began to bleed, and his blood flowed out into a single great drop, bound by the circle his long body made. He died of the loss, and tree climbed on his back and drove her roots deep into his body, trying to feed his blood into him, trying to bring him back to life, and all her acorns dropped and grew to join in the attempt. And here we are, accidents of her effort, trying to help her as we can, and some day the snake will live again, and we will all sail off among the stars, traveling in silent majesty.”
“Ah,” Thel said. And then: “I see.”
But he didn’t see, and he arranged himself for sleep and looked up into the thickets of stars, disappointed. Garth lay next to him, and much later, when the others were asleep, he whispered to him, “You don’t know where you came from. You have no idea how you came here or what you are. Worry about that, and when you know those things, then worry about the great spine.”