Andros is the largest of the Bahamian Islands and one of the least explored. Beneath the surface, the rock is riddled with caves formed underneath many thousands of years ago and presents one of the ultimate challenges in cavediving. First explored by George Benjamin and filmed by Cousteau, the exploration ended when two divers died - one of whose bodies has never been discovered. In 1981 British cavedivers began new exploration and British and American divers continued exploration in 1986 and 1987. It was during this time that they discovered spectacular inland blue holes, reached new depths using underwater technology and made many new discoveries. This book tells the story of this adventure into one of the last true frontiers of exploration - of the triumphs and tragedies, of the caves and the people who risk their lives to discover their secrets. The author, Rob Palmer is one of the world's foremost underwater explorers. He was awarded the first Colin Mcleod Prize for outstanding contributions to international diving activities by the British Sub Aqua Club.