Grand Canyon Rafting - part 4
Grand Canyon Rafting - part 4 Havasu Creek to Vulcan's Throne Landslides and Lava Flows
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Over 100 D.I.Y. geology field trips with insights you won't find anywhere else! Includes my Sevier-Laramide field trip archive. Search at top for places & topics. Explicit permission is given to use photos and videos herein with source citation for non-commercial personal, educational, academic, or training purposes including schools, universities, museums, and visitor centers.
