32:15

Explore Mysterious Rivers On The Deep Seafloor

21:46

Learn to Identify Rivers in the Rock Record with a Geologist

39:10

Explore Numerous Layers of Petrified Trees: Yellowstone National Park

17:09

Discover the Origin of a Beautiful Rock Formation

26:01

Surprising Implications of a Cave Discovery

14:48

Rock Identification

38:43

Investigate mysterious features with a geologist

22:03

"Slip Slidin' Away": The 1993 Bliss Landslide, a dramatic earthflow that diverted the Snake River