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Parachute, Colorado

The Eocene Green River Formation, forming the slope in the background, contains most oil shale reserves in the state, near Parachute, Colorado, September ©2019 hopkins/neoscenes.
The Eocene Green River Formation, forming the slope in the background, contains most oil shale reserves in the state, near Parachute, Colorado, August ©2019 hopkins/neoscenes.

Victor, Colorado

The open pit of the Newmont Cripple Creek Victor gold mine, Teller County, Colorado, July ©2011 hopkins/neoscenes.
The open pit of the Newmont Cripple Creek Victor gold mine, Teller County, Colorado, July ©2011 hopkins/neoscenes.