Here he surprises the secret of the making of Zion.
"As a monument of denudation, this chasm is an example of downward erosion by sand-bearing water. The principle on which the cutting depends is almost identical with that of the marble saw, but the sand grains, instead of being embedded in rigid iron, are carried by a flexible stream of water. By gravity they have been held against the bottom of the cut, so that they should make it vertical, but the current has carried them, in places, against one side or the other, and so far modified the influence of gravity that the cut undulates somewhat in its vertical section, as well as in its horizontal."
From a photograph by the U.S. Geological Survey
THE THREE PATRIARCHS, ZION CANYON
These red-and-white structures rise more than two thousand feet above the canyon floor
This, then, is how Nature began, on the original surface of the plateau, perhaps with the output of a spring shower, to dig this whole mighty spectacle for our enjoyment to-day. We may go further. We may imagine the beginning of the titanic process that dug the millions of millions of chasms, big and little, contributing to the mighty Colorado, that dug the Grand Canyon itself, that reduced to the glorified thing it now is the enormous plateau of our great southwest, which would have been many thousands of feet higher than the highest pinnacle of Little Zion had not erosion more than counteracted the uplifting of the plateau.