Region
United States
24
Colorado
18
Utah
12
Wyoming
6
Sierra Nevada (Calif. and Nev.)
4
Grand Staircase-Escalante National Monument
3
Grand Staircase-Escalante National Monument (Utah)
3
India
3
Nevada
3
Antarctica
2
France
2
Glen Canyon Region (Utah and Ariz.)
2
Grand Teton National Park
2
Grand Teton National Park (Wyo.)
2
Japan
2
Korea
2
Mexico
2
North Dakota
2
Papua New Guinea
2
West (U.S.)
2
Accra
1
Accra (Ghana)
1
Africa
1
Africa, Sub-Saharan
1
Arches National Park
1
Arches National Park (Utah)
1
Arizona
1
Asia
1
Australia
1
Badlands
1
Badlands (N.D.)
1
Badlands (S.D. and Neb.)
1
Badlands Region
1
Badlands Region (N.D.)
1
Badlands Region (S.D. and Neb.)
1
Black Hills (S.D. and Wyo.)
1
Black Hills Region (S.D. and Wyo.)
1
Boulder Region
1
Boulder Region (Colo.)
1
Brazil
1
Bryce Canyon National Park
1
Bryce Canyon National Park (Utah)
1
Buguias
1
Buguias (Philippines)
1
California
1
Canyonlands National Park
1
Canyonlands National Park (Utah)
1
Cloud Peak Wilderness
1
Cloud Peak Wilderness (Wyo.)
1
Colorado River (Colo.-Mexico)
1
more ...