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Subject
- Shrubs[remove]33
- National parks & reserves31
- Cliffs28
- Buttes19
- Colorado National Monument (Colo.)18
- Mountains18
- Rock formations18
- Mesas16
- Shadows15
- Arches National Park (Utah)13
- Trees13
- Boulders9
- Canyons7
- Valleys7
- Hills6
- Colorado River Valley (Colo.-Mexico)5
- Rocks5
- Colorado River (Colo.-Mexico)4
- Double Arch (Utah)4
- Rivers4