2:06:50

W. Cascades Uplift?

56:35

Dave Tucker: Calderas in the Cascades

41:02

Kellie Wall: Goat Rocks

31:00

Eric Cheney: Cascades Uplift

19:20

Geology of The Grand Canyon (~2 Billion Years of Time!) GEO GIRL

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Gold Mining Improvements in Mauritania, Africa | Mercury-Free Gold Recovery with MBMM Equipment

42:37

Grand Coulee Dam: A Man-Made Marvel (Full Movie)

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The Strange South American Flower That Steals from Fungus