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Subject
- Cliffs[remove]104
- Mesas[remove]104
- Rock formations[remove]104
- Canyons58
- Buttes53
- National parks & reserves52
- Erosion45
- Grand Canyon (Ariz.)40
- Grand Canyon National Park (Ariz.)39
- Trees31
- Shrubs20
- Boundaries15
- Valleys13
- Chelly, Canyon de (Ariz.)11
- Grasses11
- Monument Valley (Ariz. and Utah)11
- Rivers11
- Plains9
- Powell Plateau (Ariz.)9
- Mountains8