• The landscape everywhere, away from the river, is of rock - cliffs of rock; plateaus of rock; terraces of rock; crags of rock - ten thousand strangely carved forms.

    Smithsonian Institution, John Wesley Powell, Almon Harris Thompson, Elliott Coues, George Brown Goode (1875). “Exploration of the Colorado River of the West and Its Tributaries: Explored in 1869, 1870, 1871, and 1872, Under the Direction of the Secretary of the Smithsonian Institution”, p.55