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Subject
- Deserts[remove]67
- Valleys[remove]67
- Mountains40
- Hills38
- Death Valley (Calif. and Nev.)36
- Shrubs26
- Rocks23
- Cliffs17
- National parks & reserves16
- Rock formations16
- Petrified Forest National Park (Ariz.)15
- Mesas12
- Painted Desert (Ariz.)12
- Erosion8
- Petrified forests8
- Black Mountains (Inyo County, Calif.)6
- Blue Mesa (Ariz.)6
- Boulders6
- Canyons6
- Lakes & ponds6