I ignored him, walking on past the mule and heading straight for the thickest part of the crowd as if it was not there. I kept my hands still by my sides, and my eyes on the ground; I saw their feet hesitate, shuffle, move aside as the crowd parted to let me through. I walked back across the causeway, trying to move smoothly and with dignity over the broken and sodden ground. The guards made no attempt to stop me. When I passed one of the torchbearers I lifted a hand, and he fell in beside me without a word.

The track that the workmen and their beasts had beaten out of the hillside was a new one, but, as I had hoped, it followed the old deer-trod which the kings had taken. Halfway down, unmistakable, I found the rock. Young ferns were springing in the crevice among the roots of the oak, and the tree showed buds already breaking among last year’s oak-galls. Without a moment’s hesitation I turned off the track, and headed into the steep tangle of the woods.

It was far more thickly overgrown than I remembered, and certainly nobody had been this way in a long time, probably not since Cerdic and I had pushed our way through. But I remembered the way as clearly as if it had still been noon of that winter’s day. I went fast, and even where the bushes grew more than shoulder height I tried to go smoothly, unregarding, wading through them as if they were a sea. Next day I paid for my wizard’s dignity with cuts and scratches and ruined clothes, but I have no doubt that at the time it was impressive. I remember when my cloak caught and dragged on something how the torchbearer jumped forward like a slave to loosen and hold it for me.

Here was the thicket, right up against the side of the dell. More rock had fallen from the slope above, piling between the stems of the thorn trees like froth among the reeds of a backwater. Over it the bushes crowded, bare elderberry, honeysuckle like trails of hair, brambles sharp and whippy, ivy glinting in the torchlight. I stopped.

The mule slipped and clattered to a halt at my shoulder. The King’s voice said: “What’s this? What’s this? Where are you taking us? I tell you, Merlin, your time is running out. If you have nothing to show us—”

“I have plenty to show you.” I raised my voice so that all of them, pushing behind him, could hear me. “I will show you, King Vortigern, or any man who has courage enough to follow me, the magic beast that lies beneath your stronghold and eats at your foundations. Give me the torch.”