Mark Klett and Byron Wolfe, 2008. Confirming the details of the moment across the geologic horizon of Marble Canyon. Views from a military spotting scope on the Platform where William Holmes drew the eastern edge of the Kaibab (1882). Lithograph by William Henry Holmes, 1882. Sheet XIX, Views form the Marble Cañon Platform from the Eastern Brink of the Kaibab. From Clarence Dutton, Atlas to Accompany the Monograph on the Tertiary History of the Grand Cañon District. (Courtesy of the Library of Congress).
Medium: Digital inkjet print. Dimensions: 24"h x 120"w