maca65483 Green River at night, Houchin Ferry. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca65483.html maca65531 Fireflies in forest. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca65531.html maca65534 Fireflies and sinkhole. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca65534.html maca65532 Synchronous fireflies in forest. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca65532.html maca65484 Green River, stars and fireflies at night, Houchin Ferry. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca65484.html maca65533 Fireflies light the night in forest. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca65533.html maca65552 Lights of Synchronous fireflies in forest. Mammoth Cave National Park, Kentucky, USA. http://www.terragalleria.com/parks/np-image.maca65552.html