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Subject
- National parks & reserves24
- Petrified Forest National Park (Ariz.)[remove]24
- Deserts23
- Petrified forests23
- Hills15
- Rock formations15
- Mesas13
- Blue Mesa (Ariz.)12
- Erosion12
- Rocks9
- Valleys9
- Grasses8
- Cliffs6
- Jasper Forest (Ariz.)4
- Painted Desert (Ariz.)4
- Logs3
- Quartz3
- Rivers2
- Agate Bridge (Ariz.)1
- Buttes1