If you ever come by near the coast of Belize, you shouldn’t miss an opportunity to visit the Great Blue Hole, one of the world’s most recognizable natural wonders. The Great Blue Hole is located in Belize Barrier Reef Reserve System, about 60 miles away from Belize City. It is believed that this hole is the world’s largest sea-hole. It is about 125 meters deep and its diameter is about 300 meters wide. It has been created as a cause of sea level increase about 65,000 years ago.
Its almost perfect circular shape made it very popular amongst tourists who often visit this place. This place is most attractive for scuba divers who are exploring the depths of this hole. It is known that there are a plenty of cave networks in this place. Divers are also attracted with plenty of rare animal species and forms of life which can be found only in this place.
More about this as Wikipedia