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Subject
- Canyons[remove]68
- Rock formations[remove]68
- Cliffs57
- Grand Canyon (Ariz.)49
- Grand Canyon National Park (Ariz.)40
- National parks & reserves39
- Erosion37
- Mesas31
- Trees28
- Buttes27
- Oak Creek Canyon (Ariz.)17
- Shrubs15
- Tree limbs14
- Clouds13
- Mountains13
- Rivers13
- Colorado River (Colo.-Mexico)9
- Powell Plateau (Ariz.)9
- Granite Gorge (Ariz.)8
- Valleys8