Subject Region
Australia
9
United States
9
West (U.S.)
7
Yellowstone National Park
7
Southern States
5
Europe
3
South Carolina
3
California
2
Canada
2
Florida
2
Alberta
1
Arizona
1
Chinchaga River
1
Mazatzal Mountains
1
Mazatzal Mountains (Ariz.)
1
Mediterranean Region
1
Mediterraneo (Region)
1
Northwest, Pacific
1
Rocky Mountains
1
Sierra Nevada (Calif. and Nev.)
1
Southwest, New
1
Tropics
1
Victoria
1