Dean's Blue Hole

In September 1992, Jim King, president of Deep Breathing Systems Inc., became the only person to dive all the way to the bottom of the Hole.  He learned about Dean's Hole, named for the Bahamian family that owns the property, from geologist William L. Wilson. He was the lead scientific diver on the cave diving expedition of Dean's Blue hole.

In April 2007 William Trubridge broke a free-diving world record in the blue hole reaching a depth of 84m (269ft) without the use of fins. In April 2008 during the Vertical Blue 2008 free-diving competition a total of 25 national records and 5 world records were broken. During this event William Trubridge broke his own world record in the Constant Weight Without Fins (CNF) category reaching 86m (282ft) as well as breaking the record in Free Immersion (FIM) at 108m (354ft).

William offers classes and clinics at the Blue Hole.  You can visit his website here:  www.verticalblue.net.

The Rob Palmer Blue Holes Foundation, a non-profit organization, is based in the Bahamas; it was founded by Stephanie Schwabe to preserve the blue hole cave system.

Blue holes are the results of rainwater having soaked through fractures of limestone bedrock onto the watertable of glacial sea levels during the Pleistocene epoch (ice age), some 15,000 years ago. The maximum depth of other known blue holes and sinkholes is 360 feet, which makes the 663 ft depth of Dean's Blue Hole quite exceptional.

Dean's Blue Hole is roughly circular at the surface, with a diameter ranging from 25 to 35 metres (80 to 120 feet). After descending 20 metres (60 feet), the hole widens considerably into a cavern with a diameter of 100 metres (330 feet).

Blue holes are the results of rainwater having soaked through fractures of limestone bedrock onto the watertable of glacial sea levels during the Pleistocene epoch (ice age), some 15,000 years ago. The maximum depth of other known blue holes and sinkholes is 360 feet, which makes the 663 ft depth of Dean's Blue Hole quite exceptional.

Dean's Blue Hole is roughly circular at the surface, with a diameter ranging from 25 to 35 metres (80 to 120 feet). After descending 20 metres (60 feet), the hole widens considerably into a cavern with a diameter of 100 metres (330 feet).