Region
United States
50
Colorado
26
Cape Cod National Seashore (Mass.)
4
Massachusetts
4
Cape Cod National Seashore
3
Florida
2
Fruita Region
2
Fruita Region (Colo.)
2
Grand Junction Region
2
Grand Junction Region (Colo.)
2
Utah
2
Apalachicola National Forest
1
Apalachicola National Forest (Fla.)
1
Arkansas
1
Bogotá (Colombia)
1
China
1
Cibola National Forest (N.M.)
1
Cook County
1
Crested Butte
1
Crested Butte (Colo.)
1
Developing countries
1
Everglades National Park
1
Everglades National Park (Fla.)
1
France
1
Front Range (Colo. and Wyo.)
1
Gateway National Recreation Area (N.J. and N.Y.)
1
Great Britain
1
Hong Kong
1
Illinois
1
India
1
Italy
1
Japan
1
Kokopelli's Trail (Utah and Colo.)
1
Michigan
1
Minnesota
1
Moab
1
Moab (Utah)
1
New Jersey
1
New Mexico
1
North America
1
Ottawa National Forest (Mich.)
1
Rome
1
Rome (Italy)
1
Sandia Mountains
1
Sandia Mountains (N.M.)
1
Sandy Hook
1
Superior National Forest
1
Superior National Forest (Minn.)
1
Switzerland
1
Tanzania
1
more ...