Moreover, the Great Blue Hole is just a speck amidst the endlessly rich expanses of the Belize Barrier Reef, second in size only to Australia's Great Barrier Reef, making this legendary dive ...

Narrator: There's a massive underwater sinkhole off the coast of Belize that extends 125 meters into the Earth's crust. It's called the Great Blue Hole. Scuba divers and snorkelers have been ...

The Great Blue Hole is a massive marine sinkhole in the Caribbean, situated off the coast of Belize. Its diameter is 1,043 feet, and its depth reaches 407 feet.