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Subject
- National parks & reserves[remove]22
- Cliffs13
- Rock formations11
- Trees11
- Shrubs10
- Mountains9
- Canyons7
- Buttes6
- Rocks5
- Valleys4
- Yosemite National Park (Calif.)4
- Zion National Park (Utah)4
- Clouds3
- Erosion3
- Grand Canyon (Ariz.)3
- Grand Canyon National Park (Ariz.)3
- Mesas3
- Rivers3
- Colorado River (Colo.-Mexico)2
- Colorado River Valley (Colo.-Mexico)2