What Lies at The Bottom of the Belizes Great Blue Hole?

Mystery tracks have been discovered at the bottom of the Great Blue Hole—the world’s biggest ocean sinkhole, which sits about 60 miles from the coast of Belize. In December last year, a team of explorers, including billionaire Richard Branson and Fabien Cousteau, the grandson of French explorer Jacques Cousteau, took part in a mission to dive to the bottom of the hole to find out what was down there. At over 1,000 feet wide and 410 feet deep, it is a largely unexplored natural wonder.