Region
America
1
Australia
1
California
6
Cambridge
1
Canada
1
Chase County
1
Chase County (Kan.)
1
China
1
Connecticut
1
Crater Lake National Park
1
Crater Lake National Park (Or.)
1
Craters of the Moon National Monument
7
Craters of the Moon National Monument (Idaho)
9
Craters of the Moon National Preserve
4
Craters of the Moon National Preserve (Idaho)
6
Cuba
1
Deep space
2
Earth
2
Earth (Planet)
22
Egypt
1
Eightmile River Wild and Scenic River (Conn.)
1
England
7
Europe
3
Fra Mauro Crater (Moon)
2
Germany
1
Governors Island (New York County, N.Y.)
1
Great Britain
1
Great Falls of the Passaic Society for Universal Manufacturing Historic District (Paterson, N.J.)
1
Great Plains
3
Greece
1
Half Moon Bay
2
Half Moon Bay (Calif.)
2
Hudson River Valley (N.Y. and N.J.)
1
Idaho
10
India
1
Japan
2
Japon
1
Kansas
1
Kenya
1
Korea
1
Lassen Volcanic National Park
1
Lassen Volcanic National Park (Calif.)
1
Lava Beds National Monument
1
Lava Beds National Monument (Calif.)
1
Lune
3
Mars (Planet)
9
Moon
310
New Jersey
1
New York
1
New York (State)
1
more ...