Spatial Coverage
- Bulgaria1
- Cape Cod (Mass.)1
- Cape Cod.1
- Carinhanha River Watershed (Brazil)1
- Chequamegon Bay (Wis.)1
- Colima (Colima, Mexico)1
- Colima (State)1
- Columbia River1
- Columbia River Gorge (Or. and Wash.)1
- Columbia River Highway (Or.)1
- Colville (Wash.)1
- Colville National Forest (Wash.)1
- Craters of the Moon National Monument (Idaho)1
- Craters of the Moon National Monument.1
- Delaware1
- England1
- Falkland Islands1
- Florida1
- France1
- Gila County (Ariz.)1