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Spatial Coverage
- Pennsylvania8
- Maine5
- Virginia5
- Illinois3
- West Virginia3
- Missouri2
- Vermont2
- Wisconsin2
- Columbia River1
- Colville (Wash.)1
- Colville National Forest (Wash.)1
- Craters of the Moon National Monument (Idaho)1
- Craters of the Moon National Monument.1
- Idaho1
- Kentucky1
- Michigan1
- Michigan.1
- New Hampshire1
- New York1
- North Carolina1
