The Massive Eruption of California's Supervolcano: Evidence in Owens River Gorge
20:59
Why Are There Volcanoes And Obsidian At California's Salton Sea?
23:36
"Old" Yellowstone in southern Idaho: amazing deposits of pyroclastic flows from explosive eruptions
40:32
Craters Of The Moon National Monument Turns 100! Geology Of This Exceptional Monument
39:10
Explore Numerous Layers of Petrified Trees: Yellowstone National Park
20:14
Volcano Erupted Under California's Mono Lake: Exploring Black Point Volcano
44:42
DANGER & AWE IN YOSEMITE VALLEY | How The Earth Was Made (S2, E5) | Full Episode
1:24:00
How the Yellowstone Hot Spot Forged a Volcanic Wonderland in Southern Idaho
52:10