Region
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Chesapeake and Ohio Canal National Historical Park
1
Chihuahuan Desert
1
Chile
1
China
10
China, Northwest
1
China, Southwest
1
Clark County
1
Coastal Bend
1
Colombia
3
Colorado
9
Congaree National Park
1
Congaree National Park (S.C.)
1
Costa Rica
2
Cowpens National Battlefield
1
Cowpens National Battlefield (S.C.)
1
Cumberland Gap National Historical Park
1
Death Valley
1
Death Valley (Calif. and Nev.)
1
Developing countries
2
Devils Postpile National Monument
1
Devils Postpile National Monument (Calif.)
1
Don Edwards San Francisco Bay National Wildlife Refuge
1
Don Edwards San Francisco Bay National Wildlife Refuge (Calif.)
1
Earth (Planet)
1
East (U.S.)
3
Effigy Mounds National Monument
1
Effigy Mounds National Monument (Iowa)
1
Egypt
1
El Malpais National Monument
1
El Malpais National Monument (N.M.)
1
England
3
Europe
4
Everglades
1
Florida
6
Fort San Lorenzo (Panama)
1
Fort Sherman (Panama)
1
Fossil Creek
1
Fossil Creek (Ariz.)
1
France
2
French Polynesia
4
Galapagos Islands
1
Gauley River National Recreation Area (W. Va.)
1
Georgia
2
Glacier National Park
1
Grand Canyon
1
Grand Canyon National Park
1
Grand Canyon National Park (Ariz.)
1
Great Basin
2
Great Britain
10
Great Lakes (North America)
1
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