Mammoth Cave National Park (Ky.)]]> Caves]]> Great Onyx Cave]]> Unknown]]> American Alpine Club Photo Collection]]> .jpg]]> Kentucky, 1900 to 1933]]> Mammoth Cave National Park (Ky.)]]> Great Onyx Cave]]> Caves]]> Unknown]]> American Alpine Club Photo Collection]]> .jpg]]> Kentucky, 1900 to 1932]]> Mammoth Cave National Park (Ky.)]]> Great Onyx Cave]]> Caves]]> Unknown]]> American Alpine Club Photo Collection]]> .jpg]]> Kentucky, 1900 to 1931]]>