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Subject
- Deserts[remove]18
- National parks & reserves18
- Petrified Forest National Park (Ariz.)[remove]18
- Rock formations[remove]18
- Petrified forests16
- Blue Mesa (Ariz.)10
- Hills10
- Erosion9
- Mesas9
- Rocks8
- Cliffs7
- Boulders4
- Grasses4
- Valleys4
- Jasper Forest (Ariz.)3
- Quartz2
- Shrubs2
- Automobiles1
- Canyons1
- Logs1