Region
United States
121
West (U.S.)
12
Nevada
8
New Mexico
8
Arizona
7
California
6
Utah
6
Alaska
5
Idaho
5
Montana
5
Tonto National Forest
4
Tonto National Forest (Ariz.)
4
Sandoval County
3
Virginia
3
Chesapeake Bay Region (Md. and Va.)
2
Colorado
2
Fairfax County
2
George Washington Memorial Parkway (Va. and Washington, D.C.)
2
Gila National Forest
2
Gila National Forest (N.M.)
2
Hawaii
2
Limestone Hills Training Area (Mont.)
2
Lincoln County
2
Park County
2
Pershing County
2
San Juan County
2
Utah Test and Training Range (Utah)
2
White Sands Missile Range (N.M.)
2
Alabama
1
Appalachian Basin
1
California, Northern
1
California, Southern
1
Canada
1
Chaco Culture National Historical Park
1
Chopaka Mountain
1
Chugach National Forest
1
Chugach National Forest (Alaska)
1
Clark County
1
Clearwater National Forest
1
Clearwater National Forest (Idaho)
1
Colorado Plateau
1
Colorado River (Colo.-Mexico)
1
Connecticut
1
Everglades National Park
1
Everglades National Park (Fla.)
1
Florida
1
Fort Bliss (Tex.)
1
Grand Rapids
1
Grand Staircase-Escalante National Monument
1
Grand Staircase-Escalante National Monument (Utah)
1
more ...