Region
Pennsylvania
19
Mammoth Cave (Ky.)
6
Kentucky
5
United States
5
Port Kennedy
2
Arizona
1
Canada
1
Cave in Rock (Ill.)
1
Center Hall
1
Centre County
1
Centre County (Pa.)
1
Clarksville
1
Colombia
1
Delaware County
1
Delaware River Valley (N.Y.-Del. and N.J.)
1
Durham Cave (Pa.)
1
Irwin's Cave
1
Kutztown
1
Mammoth Cave
1
Mammoth Cave, Kentucky
1
Maury Co
1
Montgomery Co
1
New York (State)
1
New York (state)
1
Ohio River Valley
1
Penn's Cave (Pa.)
1
Penn's cave, Pa
1
Randolph Co
1
Schoharie Cave
1
Schoharie Co
1
Schoharie County
1
Springfield (Delaware County, Pa. : Township)
1
Tennessee
1
Tuscumbia
1
Virginia
1
West Virginia
1
Weyer's Cave
1
Weyer's Cave (Augusta County, Va.)
1
Wier's Cave (Austusta County, Va.)
1