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Subject
- Rock formations[remove]4
- Cliffs3
- Mesas2
- National parks & reserves2
- Shrubs2
- Black Canyon of the Gunnison (Colo.)1
- Black Canyon of the Gunnison National Park (Colo.)1
- Buttes1
- Colorado National Monument (Colo.)1
- Electric lines1
- Erosion1
- Garden of the Gods (Colorado Springs, Colo.)1
- Mountains1
- Pikes Peak (Colo.)1
- Pulpit Rock (Colo.)1
- Sand1
- Trees1
- Valleys1