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Subject
- Deserts[remove]23
- National parks & reserves[remove]23
- Petrified Forest National Park (Ariz.)23
- Petrified forests22
- Hills15
- Rock formations14
- Mesas13
- Blue Mesa (Ariz.)12
- Erosion12
- Valleys9
- Grasses8
- Rocks8
- Cliffs6
- Jasper Forest (Ariz.)4
- Painted Desert (Ariz.)4
- Logs3
- Quartz3
- Rivers2
- Buttes1
- Mounds (Landforms)1