Valles Caldera Geology Tour (Part 1 of 6): Introduction
16:49
Valles Caldera Geology Tour (Part 2 of 6): Catastrophe Begins
14:54
Arizona's Active Volcanoes Don't Make Sense
10:59
Exploring Sulphur Springs in the Valles Caldera, New Mexico
27:44
Remembered Earth - New Mexico's High Desert
28:42
Valles Caldera National Preserve drive-through
23:22
Southern California Geology | A Volcanic Plug of Dacite Columns
24:50
A Brief History of Colorado Through Time (Geology of Colorado)
20:59