A diver hovers next to a giant column in Dan's Cave, Abaco. Photo by Curt BowenA 3000 year old crocodile exposed within layers of peat in Sawmill Sink. Photo by Curt BowenBrian Kakuk floating over a marine blue hole on the bow of Lusca. Photo by Curt BowenNancy Albury swims through crystal formations of the MAD room in Dan's Cave, Abaco. Photo by Brian KakukCrystal drapries gleam in the darkness of Ralph's Blue Hole, Abaco. Photo by Brian KakukSunbeams shine on deco cylinders in the entrance to Dan's Cave, Abaco. Photo by Brian KakukCrystal cups in a crystal garden in Ralph's Cave, Abaco. Photo by Brian KakukCrystal stalactites cover every inch of the ceiling in the MAD room of Dan's Cave, Abaco. Photo by Brian KakukA rebreather diver surveys the line in Sawmill Sink, Abaco. Photo by Curt BowenWatching clouds passing by from the bottom of Magical Blue Hole, Abaco. Photo by Brian KakukSome blue holes require rope work to gain access. Photo by Curt BowenA cave diver setting up for decompression in the entrance to Dan's Cave, Abaco. Photo by Brian KakukCave diver Nancy Albury exiting the MAD room in Dan's Cave, Abaco. Photo by Brian KakukCave diver Tim Higgs swimming through a forest of formations in Dan's Cave, Abaco. Photo by Curt BowenCave diver Nancy Albury near the end of one of many large rooms in Dan's Cave, Abaco. Photo by Brian KakukCave diver Don Folwer checks out a Lucayan artifact in a blue hole on Andros Island. Photo by Brian KakukCave diving Marine Biologist, Dr. Thomas Iliffe of Texas A&M University swimming through formations in Basil Minns Blue Hole, Great Exuma Island. Photo by Brian KakukBCRF Director Brian Kakuk checks out ancient tortoise remains in a blue hole on the Island of Eleuthera. Photo by Tamara ThomsenBrian Kakuk heads off on an exploration dive in Conch Sound Blue Hole, Andros Island. Conch Sound Blue Hole is the longest ocean cave in the world. Photo by Chris CrumleyA 20 foot high column in the massive entrance to Crocodile Cave on the Island of Eleuthera. Photo by Tamara ThomsenDr. Thomas Iliffe of Texas A&M University holds a 16000 year old bat skull next to a hydrolab device used for monitoring cave water in Oven Rock Cave, Exuma Cays. Photo by Brian KakukBCRF Director Brian Kakuk emerges from a well dug by the U.S. Air Force in the 1950's on the island of Mayaguana. Photo by Brett Gonzales.Brian Kakuk floats beneath crystal Helictites and soda straws in Fangorn Forest, Dan's Cave. Photo by Arek PersCrystal Helictites and soda straws in Fangorn Forest, Dan's Cave. Photo by Arek PersBrown and white helictites in Fangorn Forest, Dan's Cave. Photo by Arek PersHelictites and soda straws in Fangorn Forest, Dan's Cave. Photo by Arek PersThe crystal "bird bath" near the entrance to Fangorn Forest, Dan's Cave, Photo by Arek Pers