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Subject
- Hills[remove]13
- National parks & reserves[remove]13
- Petrified Forest National Park (Ariz.)13
- Rocks11
- Petrified forests9
- Deserts8
- Rock formations8
- Boulders7
- Cliffs7
- Shrubs6
- Fossils5
- Petrified wood5
- Mesas3
- Blue Mesa (Ariz.)2
- Buttes2
- Canyons2
- Logs2
- Mountains2
- People2
- Valleys2