When the sea level rose due to melting of glaciers, some of these holes became submerged.
Its a popular spot among recreational scuba divers.
After descending 20 meters, the hole widens considerably into a cavern with a diameter of 100 meters.
It is the second deepest blue hole at 130 meters.
It is a 15 meters deep and 10 meters wide hole in the bedrock of the cliff.
Underwater, the Blue Hole is connected by a tunnel to the open sea.
