Saddle Mountains - Volcanic Ash from Yellowstone Explosion
24:15
The Snake River at Saddle Mountains?
45:23
Craters of the Moon!
20:02
Cougar Point Tuff
32:38
Northrup Canyon Granite
39:10
Explore Numerous Layers of Petrified Trees: Yellowstone National Park
35:40
Hundreds of Walls Lead to Evidence of Catastrophes Near Yellowstone
25:01
Tieton Andesite Columns
53:21