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Region
- Utah6
- Wasatch Range (Utah and Idaho)4
- Amazon River Region3
- California3
- Earth (Planet)3
- Southern States3
- Alabama2
- Alaska2
- AlaskaBrooks Range2
- AlaskaOcean Point2
- AlaskaOcean Point Region2
- Appalachian Region, Southern2
- CaliforniaLos Angeles Basin2
- CaliforniaSan Joaquin River Watershed2
- Canada2
- Chattanooga Shale2
- Colorado2
- Georgia2
- Grand Staircase-Escalante National Monument (Utah)2
- Gulf Coast (U.S.)2