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The Great Blue Hole, Belize
A world-renowned natural wonder and iconic marine sinkhole, part of Belize’s UNESCO Barrier Reef.
About The Great Blue Hole
Belize’s Iconic Underwater Marvel
A spectacular marine sinkhole set within Lighthouse Reef Atoll — a bucket-list destination for divers.
The Great Blue Hole is a massive circular marine sinkhole near the center of Lighthouse Reef Atoll, approximately 318 meters (1,043 feet) across and 124 meters (407 feet) deep. Its dramatic contrast between dark blue waters and the surrounding shallow reef makes it visible even from space. This natural wonder formed as a collapsed limestone cave system that flooded as sea levels rose.
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Blue Hole Highlights
Why Visit the Great Blue Hole
A transcendent spectacle for scuba divers, snorkelers, and aerial-view travelers alike.
Unique Formation
A flooded cave sinkhole formed during ancient ice ages periods.
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Diving Legacy
Cousteau named it premier dive site featuring stalactites deep walls.
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Aerial Views
Perfectly circular shape visible from scenic flights and helicopter tours.
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UNESCO Status
Part of Belize Barrier Reef Reserve System UNESCO World Heritage.
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Tours & Experiences
Great Blue Hole Tours
Experience the Great Blue Hole through unforgettable full-day boat excursions or breathtaking scenic flights departing from San Pedro and Caye Caulker. Boat tours include reef snorkeling, crystal-clear waters, and vibrant marine life surrounding Lighthouse Reef.
Advanced certified divers can descend into the iconic sinkhole to explore stalactites and dramatic walls, while non-divers enjoy surface adventures. Scenic flights showcase the Blue Hole’s perfect circular formation from above, making this legendary natural wonder accessible, awe-inspiring, and memorable for every type of traveler.
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