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Subject
- Canyons2
- Cliffs2
- Colorado River (Colo.-Mexico)2
- Colorado River Valley (Colo.-Mexico)[remove]2
- Grand Canyon (Ariz.)[remove]2
- Grand Canyon National Park (Ariz.)2
- National parks & reserves[remove]2
- Rivers[remove]2
- Valleys2
- Buttes1
- Desert View Point (Ariz.)1
- Erosion1
- Rock formations1
- Rocks1
- Shrubs1
- Trees1