Photo of the Day: August 24, 2006NATIONALGEOGRAPHIC.COM

Diepolder Cave, Florida, 1998
Photograph by Wes Skiles

“陽光到不了Diepolder洞的內部，讓76米深的這個大房間沒有生物。 佛羅里達的洞穴對潛水者是嚴峻的： 從1960年起超過300人死在這地層之下。”

—摘譯自 "Unlocking the Labyrinth of North Florida Springs," March 1999, National Geographic magazine