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Subject
- Canyons[remove]4
- Cliffs3
- Mountains2
- National parks & reserves2
- Rivers2
- Rock formations2
- Shadows2
- Shrubs2
- Black Canyon of the Gunnison (Colo.)1
- Black Canyon of the Gunnison National Park (Colo.)1
- Colorado National Monument (Colo.)1
- Eagle River (Colo.)1
- Mesas1
- Railroads1
- Roads1
- Rocks1
- Royal Gorge (Colo.)1
- Suspension bridges1
- Trees1
- Utility poles1