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Subject
- Deserts[remove]159
- Mountains[remove]159
- Shrubs99
- Valleys40
- Cactus39
- Death Valley (Calif. and Nev.)33
- Hills33
- Rocks33
- Saguaro National Park (Ariz.)21
- Clouds20
- Mojave Desert (Calif.)20
- Rock formations19
- Trees19
- Cliffs18
- Flowers16
- Saguaro16
- National parks & reserves14
- Roads12
- Grasses11
- Plants11