Giants Navy Blue Hole of Belize This country is on the eastern side of Central America. Caribbean sea This hole is located approximately 60 miles from the coast of Belize in diameter, 984 feet to a depth of about 410 feet, it is believed that this hole is a hole in the sea which are the largest in the world. Assumed that it formed in the Ice Age. There is also a hole in the first seven holes, diver ranking places to dive in the world.