The Great Blue Hole, part of the Lighthouse Reef System, lies approximately 60 miles off the mainland out of Belize City, in the Central American nation of Belize.
A large, almost perfectly circular hole approximately one quarter of a mile (0.4 km) across, it’s one of the most astounding dive sites to be found anywhere on earth. Inside this hole, the water is 480 feet (145 m) deep and it is the depth of water which gives the deep blue color that causes such structures throughout the world to be known as “blue holes.”
A whole in the water can be sooo beautiful ! !