Dean's Blue Hole (Clarence Town).

Plunging to a depth of over 200 meters, Dean’s Blue Hole is one of the deepest saltwater sinkholes on Earth and a legendary destination for the global freediving community. From the surface, this natural wonder looks like a dramatic, ink-blue circle dropped into a shallow, turquoise lagoon. On three sides, it is framed by a natural rock amphitheater of cliffs, while a white sand beach borders the fourth. While elite athletes gather here for the annual Vertical Blue competition, everyday travelers can swim, snorkel, or even cliff-jump into the deep pool. The water is exceptionally clear, with visibility reaching 30 meters, though the sudden drop-off means strong swimming skills are a must. It is a rare natural spectacle that is both a serene beach day and a venue for extreme sport.