Author: Thybony, Scott
Title: A Guide to Hiking the Inner Canyon
Description: , Grand Canyon Natural History Association, 1980. . Paperback (Saddle Stitched). . Unmarked. Maps. Bibliography. Glossary. Topics include weather conditions, South Rim Trails, Safety, and North Rim Trails. Many color illustrations, including a geologic crossection. Minimum impact section of the booklet was written by Sam West and Mark Sinclair of the National Park Service. The Grand Canyon is part of the Colorado River basin which has developed over the past 40 million years.. . ISBN: 0938216120. Very Good

Keywords: NPS, National Park Service, Grand Canyon, Geology, Earth Sciences, Hiking, Colorado River, Arizona, Pueblo, 0938216120


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