8 Weeks on Foot Through the Grand Canyon by James Mauch
29:01
Running the Grand Canyon Tonto Trail - Better than Rim-to-Rim?
1:18:37
The Spectacular Yet Somewhat Forgotten Bonneville Flood
15:47
Quartzsite Big Tent vs Tyson Wells - What & Where is the Difference - S10.E01 #quartzsite #bigtent
1:22:19
Thoughts on the Displacement and Inception of the Teton Fault, Wyoming*
1:05:46
Geology for Mountaineers by Dr Mike Merigliano
21:35
Trucks, Trains, Terns & Tractors; An Ordinary Rock & Its Amazing Value
30:38
Silent Hiking in the Grand Canyon for 5 days
35:37