The day after this climb the walls ran up to about twenty-seven hundred feet, apparently in places absolutely vertical, though Stanton, who came through here in 1890, said he did not think they were anywhere perpendicular to the top.

The tongue of a bend we found always more or less broken, but in the curve the cliffs certainly had all the effect of absolute perpendicularity, and in one place I estimated that if a rock should fall from the brink it would have struck on or near our boat.

This shows, at any rate, that the walls were very straight.

The boats seemed mere wisps of straw by comparison, and once when I saw one which had preceded ours, lying at the end of a clear stretch, I was startled by the insignificance of the craft on which our lives depended.

Beaman tried to take some photographs which should give this height in full, but the place was far beyond the power of any camera.