Narrator: There's a massive underwater sinkhole off the coast of Belize that extends ... descent to the bottom of the Blue Hole. Their mission was to create a 3D map of the sinkhole's interior ...

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 ...

Tropical storms have been steadily increasing in frequency over the past 5,700 years, new evidence from sediment in the Great Blue Hole reveals, with a massive spike in the past two decades.

‘A 30m-long sediment core from the Great Blue Hole, a marine sinkhole offshore Belize, provides the longest available, continuous, and annually resolved tropical cyclone frequency record.

Declared a UNESCO World Heritage Site in 1996 – along with six other areas surrounding Belize's barrier reef – the Great Blue Hole remains one of the world's most distinguished scuba sites.