Perfect for the first-time visitor or the seasoned traveler. Includes sections on the geologic records, regional geology, plate tectonies and the Colorado River

This second edition of the leading book on Grand Canyon geology contains the most recent discoveries and interpretations of the origin and history of the canyon

Rivers wind through earth, cutting down and eroding the soil for millions of years, creating a cavity in the ground 277 miles long, 18 miles wide, and more than

Discover the Grand Canyon--a mysterious, exciting, and exotic natural landform.