These publications are freely distributed by the National Park Service. All require Adobe Acrobat Reader for viewing.
Archeology [130k PDF File]
Geology [161k PDF File]
Did You Know?
Prospector Cass Hite first named the bridges "President," "Senator" and "Congressman." While later explorers gave them other names, the General Land Office assigned the Hopi names "Sipapu," "Kachina" and "Owachomo" in 1909.