Dean's Blue Hole, Natural sinkhole in Long Island, Bahamas
The circular surface of this underwater formation measures 30 meters across and extends to a depth of 202 meters into marine limestone.
During the last ice age, rainfall gradually dissolved the limestone bedrock, creating extensive vertical shafts that formed this water-filled geological structure.
The annual Vertical Blue competition brings international free divers to test their abilities in reaching substantial depths without artificial breathing apparatus.
Visitors can access the site through a rocky path leading to a white sand beach, where swimming and snorkeling equipment allow exploration of marine life.
At 20 meters below the surface, the circular opening expands into a vast underwater cavern measuring 100 meters in diameter.
Location: Long Island
Address: 4X4R+GGH, Clarence Town, The Bahamas Clarence Town Clarence Town
Opening Hours: Lunes-Viernes 08:00-18:00
Website: https://deansbluehole.org
GPS coordinates: 23.10634,-75.00861
Latest update: June 3, 2025 01:46
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