Canyons Of The Colorado Book

One must not think of a mountain range as a line of peaks standing on a plain, but as a broad platform many miles wide from which mountains have been carved by the waters. One must conceive, too, that this plateau is cut by gulches and canyons in many directions and that beautiful valleys are scattered about at different altitudes. The first series of canyons we are about to explore constitutes a river channel through such a range of mountains.