“Due to the unique environmental conditions – including oxygen-free bottom water and several stratified water layers – fine marine sediments could settle largely undisturbed in the ‘Great Blue Hole.’ ...

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

While the Great Blue Hole has silently recorded history for thousands of years, its latest revelations are a loud warning.

It's called the Great Blue Hole. Scuba divers and snorkelers have been cruising the surface waters for decades, but few have dared to venture deeper and explore what lies beyond the blackness.