We had proceeded some five more miles when again we saw a white arrow upon the rocks. It was at a point where the face of the cliff was for the first time split into a narrow cleft. Inside the cleft was a second guidance mark, which pointed right up it with the tip somewhat elevated, as if the spot indicated were above the level of the ground.

It was a solemn place, for the walls were so gigantic and the slit of blue sky so narrow and so obscured by a double fringe of verdure, that only a dim and shadowy light penetrated to the bottom. We had had no food for many hours, and were very weary with the stony and irregular journey, but our nerves were too strung to allow us to halt. We ordered the camp to be pitched, however, and, leaving the Indians to arrange it, we four, with the two half-breeds, proceeded up the narrow gorge.