First: Wm. H. Bell, ca. 1872. Perched Rock (Rocker Creek). (United States Geological Survey.)
Third: Mark Klett and Michael Marshall for the Third View Project, 2000. Balanced Rock near Vermillion Cliffs, AZ.
First: Wm. H. Bell, ca. 1872. Perched Rock (Rocker Creek). (United States Geological Survey.)
Third: Mark Klett and Michael Marshall for the Third View Project, 2000. Balanced Rock near Vermillion Cliffs, AZ.
