Ride!' went the call, and the individuals of the troop became a single lurching, streaming mass of horseflesh pounding toward the trees.
The first of the men reached the tree line moments before the sound became a roar, the crack and crash of stones, of huge granite boulders large enough to smash into other parts of the cliff and send them driving downwards. The thundering sound, echoing off the walls of the mountain, was frightening and panicked the horses almost more than the boulders at their heels. It was as though the whole surface of the cliff loosened, dissolved into a liquid surface: a rain of stone, a rolling wave of stone.
