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- Canyons[remove]2
- Cliffs[remove]2
- Black Canyon (Ariz. and Nev.)1
- Bodies of water1
- Boulder Canyon (Ariz. and Nev.)1
- Buttes1
- Dams1
- Electric lines1
- Erosion1
- Grand Canyon (Ariz.)1
- Grand Canyon National Park (Ariz.)1
- Granite Gorge (Ariz.)1
- Hoover Dam (Ariz. and Nev.)1
- Hydraulic facilities1
- Hydroelectric generators1
- Hydroelectric power1
- Lakes & ponds1
- Mead, Lake (Ariz. and Nev.)1
- National parks & reserves1
- Rock formations1