The Great Blue Hole is a top attraction in Belize, drawing many tourists each year. They come for adventure and to see a natural wonder. Tourism is big in Belize, making up 40% of its economy ...

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 ... that this was a big, dry cave, and ...