Region
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Boulder Batholith
1
Brazil
5
Bristol
1
British Columbia
1
Broadwater County
2
Broadwater County (Mont.)
1
Brooks Range
2
Brown County
1
Butte County
1
California
73
California National Historic Trail
1
California, Gulf of
1
California, Gulf of (Mexico)
1
California, Southern
10
Canada
29
Canada, Eastern
1
Canadian Shield
1
Canterbury
1
Canterbury (England)
1
Canyonlands National Park (Utah)
1
Cape York Peninsula (Qld.)
1
Caribbean Area
3
Caribou County
3
Caribou County (Idaho)
1
Carl Sandburg Home National Historic Site
1
Carl Sandburg Home National Historic Site (Flat Rock, Henderson County, N.C.)
1
Carl Sandburg Home National Historic Site (Flat Rock, N.C.)
2
Carlsbad Caverns National Park (N.M.)
1
Carpentaria Basin (Qld. and N.T.)
1
Castle Rock
1
Cave Rock (Nev.)
1
Cave in Rock (Ill.)
2
Central America
1
Chandīgarh (India)
1
Chandīgarh (Union Territory)
1
Charleston
1
Chattanooga Region
1
Chattanooga Region (Tenn.)
1
Chattooga River Region (N.C.-Ga. and S.C.)
1
Chauvet Cave (France)
1
Chelly Canyon
1
Chelly, Canyon de
1
Chelly, Canyon de (Ariz.)
1
Cheyenne River Indian Reservation
1
Chicago
5
Chicago (Ill.)
1
Chimney Rock (Kittitas County)
1
Chimney Rock Park
1
Chimney Rock Park (N.C.)
1
China
4
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