The stream in the ravine slid down a long slope like a mill-race, and the sides were bare and stony.

Still I plodded on, helping myself with a hand on Colin's back, for my legs were numb with fatigue.

By-and-by the gully narrowed, and I came to a flat place with a long pool.

Beyond was a little fall, and up this I climbed into a network of tiny cascades.

Over one pool hung a dead tree-fern, and a bay from it ran into a hole of the rock.