deepest sinkhole in the world
The deepest holes in the world. Whether they're man-made mines or natural sinkholes, these massive holes around the world are anything but the pits. At more than 650 feet deep, Deanâs Blue Hole is the worldâs deepest sinkhole with an entrance below water. Located in a bay near Clarence Town on the Bahamasâ Long Island, its visible diameter is roughly 82â115 feet.