Great Blue Hole
A round submarine sinkhole about 300 meters across at the center of the Lighthouse Reef. It is a world-famous dive site, and you can also see it from above on a small airplane.
The Great Blue Hole is a sinkhole formed when a limestone cave from the Ice Age collapsed and was flooded by the sea. It is about 125 meters deep and became famous in 1971 after reports by Jacques Cousteau. Diving tours depart around 5–6 a.m. The boat ride takes about 2–2.5 hours each way. The first dive goes to about 40 meters to see stalactites. It requires an advanced open water certification and some experience. Afterward, you have lunch on Half Moon Caye. A full day costs about US$300–350. If you don't want to dive, you can take a one-hour sightseeing flight for about US$250–300, which is the most direct way to see the round deep-blue hole.
Opening hours
Group boat trips or sightseeing flights
Nearby sights
- Half Moon Caye
- Turneffe Atoll
- Swallow Caye Wildlife Sanctuary
- Caye Caulker
- Shark Ray Alley
- Hol Chan Marine Reserve
- San Pedro Town
- Marco Gonzalez Maya Site