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 ... descent to the bottom of the Blue Hole. Their mission was to create a 3D map of the sinkhole's interior ...

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.

Explore the ultimate Belize Travel Guide for your next adventure to pristine beaches and stunning coral reefs.