A weirwood.
It seemed to sprout from solid rock, its pale roots twisting up from a myriad of fissures and hairline cracks. The tree was slender compared to other weirwoods he had seen, no more than a sapling, yet it was growing as he watched, its limbs thickening as they reached for the sky. Wary, he circled the smooth white trunk until he came to the face. Red eyes looked at him. Fierce eyes they were, yet glad to see him. The weirwood had his brother's face. Had his brother always had three eyes?
Not always, came the silent shout. Not before the crow.
He sniffed at the bark, smelled wolf and tree and boy, but behind that there were other scents, the rich brown smell of warm earth and the hard grey smell of stone and something else, something terrible. Death, he knew. He was smelling death. He cringed back, his hair bristling, and bared his fangs.
Don't be afraid, I like it in the dark. No one can see you, but you can see them. But first you have to open your eyes. See? Like this. And the tree reached down and touched him.
And suddenly he was back in the mountains, his paws sunk deep in a drift of snow as he stood upon the edge of a great precipice. Before him the Skirling Pass opened up into airy emptiness, and a long vee-shaped valley lay spread beneath him like a quilt, awash in all the colors of an autumn afternoon.