Folding Rocks; From the Miniscule to Giant Mountains
28:18
How Geologists Determine the Age of Mountains
56:04
Hike with a geologist and learn how erosion forms beautiful landscapes
25:24
An Unusual Sandstone Monument: Where Did It Come From? Where Did It Go?
36:55
Appalachian Geology: Surprising Implications
33:12
Is this the biggest boulder in the Appalachian Mountains?
11:35
Why Do Utah's Uinta Mountains Run East-West?
24:24
Is This Natural ???
25:28