Spatial Coverage
- China.1
- Continental Divide National Scenic Trail1
- Continental Divide National Scenic Trail.1
- Crater Lake National Park (Or.)1
- Crater Lake National Park.1
- Cuba1
- Cuba.1
- Cumberland Mountains1
- Cumberland Mountains.1
- Cumberland Road1
- Cumberland Road.1
- Curlew National Grassland (Idaho)1
- Curlew National Grassland.1
- Death Valley (Calif. and Nev.)1
- Death Valley National Park (Calif. and Nev.)1
- Death Valley National Park.1
- Death Valley.1
- Delaware Basin (Tex. and N.M.)1
- Delaware Basin.1
- Delaware River Estuary1
