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Subject
- Deserts11
- Erosion[remove]11
- National parks & reserves11
- Petrified Forest National Park (Ariz.)[remove]11
- Petrified forests[remove]11
- Rock formations9
- Hills7
- Blue Mesa (Ariz.)6
- Mesas5
- Valleys5
- Grasses4
- Rocks4
- Cliffs3
- Jasper Forest (Ariz.)3
- Quartz2
- Buttes1
- Logs1
- Mounds (Landforms)1
- Painted Desert (Ariz.)1
- Rivers1