Analysis of the sediment in Belize’s Great Blue Hole shows a concerning trend. Blue holes, the name for collapsed limestone ...

The history of the Great Blue Hole in the Caribbean is being revealed by a 30-meter (98-foot) sediment core taken from the ...

Taam Ja’ Blue Hole took over the title of the world’s deepest blue hole ... initial echo sounder mapping indicated a depth of around 274 meters, and left the team unsatisfied.

Declared a UNESCO World Heritage Site in 1996 – along with six other areas surrounding Belize's barrier reef – the Great Blue Hole remains ... snorkeling around the hole and the nearby reefs.

Blue holes are underwater sink holes, with several having already been found and explored around the world. The giant blue hole was originally discovered two years ago but details have only ...