Courtesy of National Park Service.
Public Domain.
Location: Kentucky
Keywords: Floyd Collins, Mammoth Cave, Flint Ridge, Mammoth Ridge, Crystal Cave, cappers, spelunker, karst, limestone, media spectacle
Courtesy of National Park Service.
Public Domain.
Location: Kentucky
Keywords: Floyd Collins, Mammoth Cave, Flint Ridge, Mammoth Ridge, Crystal Cave, cappers, spelunker, karst, limestone, media spectacle