Park ranger orienting tourists at Mammoth Cave National Park, Kentucky
Tourists entering Mammoth Cave in Kentucky, USA
Tourists entering Mammoth Cave National Park in Kentucky
Plaque honoring students of Western Kentucky State Teachers College - Mammoth Cave, Kentucky
Tour inside Mammoth Cave National Park in Kentucky
Sandstone blocks at Mammoth Cave National Park, Kentucky
Rock formations inside Mammoth Cave National Park in Kentucky
Stalactites and stalagmites inside Mammoth Cave in Kentucky
Sign outside Mammoth Cave National Park in Kentucky
