"Kanab Canon, near the junction of Kanab Creek with the Colorado River. About 2800 feet of wall is shown here, the upper portion being the Red Wall. The Upper walls (Aubrey) are not disclosed. The depth of Kanab Canon here is about 4700 feet. Drawn by Thomas Moran. Wood-cut. Grand Canyon District, Arizona . Circa 1877. Plate 29, in U.S. Geological Survey Second Annual Report, 1880-1881. 1882. Plate 25 in U.S. Geological Survey Monograph 2, 1882." Courtesy of the US Geological Survey Photographic Library.