Narrator: Past the conch graveyard and toward the bottom of the hole ... off the coast of Belize that extends 125 meters into the Earth's crust. It's called the Great Blue Hole.

The Great Blue Hole, located off the coast of Belize, has long fascinated scientists. When divers finally reached its bottom, they discovered something shocking. The Great Blue Hole is a massive ...

Belize’s Great Blue Hole, pictured here, is probably the most recognizable blue hole. The newly discovered blue hole off the ...

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.