Mystery Cave
An extensive underwater cavern system that Jacques Cousteau explored, running beneath Stocking Island to resurface miles offshore.
Mystery Cave is one of the most intriguing dive sites in the Exumas, an extensive underwater cavern system that extends beneath Stocking Island near George Town. The cave entrance sits at the mouth of the same bay as Angelfish Blue Hole, beginning in shallow water at about 15 feet before plunging to 100 feet and continuing into darkness.
Legendary explorer Jacques Cousteau investigated this site, and subsequent explorers have proven the system connects to an inland blue hole. When divers released dye into the cave entrance, it resurfaced four miles offshore, hinting at the vast extent of this underground labyrinth.
The cave system
Mystery Cave begins deceptively shallow at around 15 feet, but the floor soon drops away to 100 feet as the cavern descends into the limestone bedrock. The extensive network runs beneath Stocking Island, with multiple passages extending in different directions. The dye trace that resurfaced miles offshore demonstrated this is no simple cave but a complex system carved over millennia.
Only the entrance zone falls within recreational diving limits. Beyond the light zone, the cave becomes a technical dive requiring cave certification, redundant equipment, and specialized training. The transition from daylight to absolute darkness happens quickly.
Diving Mystery Cave
The cavern zone near the entrance offers dramatic diving for experienced open water divers comfortable with overhead environments. Light filtering from the entrance creates striking visual effects on the limestone walls. The depth change from 15 to 100 feet happens rapidly, requiring careful buoyancy control and awareness.
Like Angelfish Blue Hole nearby, Mystery Cave must be dived at slack tide. The tidal exchange through this extensive system generates significant currents during tidal changes. Local operators know the timing and conditions required for safe exploration.
Planning your dive
Mystery Cave is typically offered as part of a multi-site dive excursion from George Town, often paired with Angelfish Blue Hole. The proximity of both sites makes for an efficient and varied dive morning. Advanced certification is recommended given the depth range and overhead environment.
True cave penetration beyond the cavern zone is strictly for certified cave divers with appropriate training and equipment. The recreational dive focuses on the entrance chamber and transition zone where natural light remains visible.
Getting there
Mystery Cave is reached by dive boat from George Town on Great Exuma. The entrance is located at the mouth of the bay containing Angelfish Blue Hole, making the two sites natural companions for a multi-dive excursion. Local operators including Dive Exuma offer trips when conditions permit. The cave can only be safely dived at slack tide.
Frequently asked questions
- Can recreational divers explore Mystery Cave?
- Recreational divers can explore the cavern zone near the entrance where natural light is visible. Full cave penetration beyond the light zone requires cave diving certification and specialized equipment.
- How does Mystery Cave connect to the island?
- The cave system runs beneath Stocking Island and connects to an inland blue hole. Dye released into the entrance has resurfaced four miles offshore, demonstrating the extent of the underwater passages.
- Why is this called Mystery Cave?
- The name reflects the unknown extent of the cave system and its connections beneath the island. Despite exploration by Jacques Cousteau and others, much of the system remains unmapped.