Caves and Caverns of the Southeastern US
These three sites–Russell Cave, Ruby Falls, and Mammoth Cave–represent a range of karst landscapes that played varying historic roles in the southeastern United States. There’s Russell Cave, which provided shelter to people for millennia; Ruby Falls, excavated only in the 20th century and opened as a tourist site, now renowned for its stunning formations and underground waterfall; and of course the incomparable Mammoth Cave, with its seemingly endless trails.