Hopi Reservation Click the image to see the original photo at maximum resolution (potentially large files). Click the title to see a full description, geolocation, and more. Photos 1 - 4 of 4 azgs_photo Climbing sand dune, Cameron, Arizona azgs_photo Bidahochi Formation exposed at Roberts Mesa azgs_photo Paleochannel in the Chinle Formation, Hopi Reservation azgs_photo Investigating the Upper Bidahochi Formation, Roberts Mesa, Arizona