So Carter walked in the dark, and ran when he thought he heard something among the bones underfoot. Once he bumped into a stony slope, and knew it must be the base of one of Throk's peaks. Then at last he heard a monstrous rattling and clatter which reached far up in the air, and became sure he had come nigh the crag of the ghouls. He was not sure he could be heard from this valley miles below, but realised that the inner world has strange laws. As he pondered he was struck by a flying bone so heavy that it must have been a skull, and therefore realising his nearness to the fateful crag he sent up as best he might that meeping cry which is the call of the ghoul.