Right to the edge of this precipice ran the path, for one of the stone pillars stood upon its extreme brink, and yet how could a road descend such a place as that? We stared aghast; then a possible solution occurred to us. "Don't you see," said Leo, with a hollow laugh, "the gulf has opened since this track was used: volcanic action probably." "Perhaps, or perhaps there was a wooden bridge or stairway which has rotted. It does not matter. We must find another path, that is all," I answered as cheerfully as I could. "Yes, and soon," he said, "if we do not wish to stop here for ever." So we turned to the right and marched along the edge of the precipice till, a mile or so away, we came to a small glacier, of which the surface was sprinkled with large stones frozen into its substance. Thi

