Blue hole
Stargate Blue Hole
The single entrance to the Stargate fracture cave on South Andros: a rimmed inland blue hole on private land, with a hydrogen sulfide layer below the surface and large decorated passages beyond.
The entrance is a large opening a short walk from the road, with the water a few metres below the rim. Divers descend through fresh water and a hazy hydrogen sulfide layer into a deep shaft, from which a wide crack leads into the North Passage, a large tunnel with flowstone on the walls.
The site is on private land and is dived on organised trips with experienced guides. It is a deep technical cave environment rather than a daylight cavern.
The environment
Deep inland fracture shaft and large tunnels; fresh water over salt water with a hydrogen sulfide layer; flowstone decoration.
Conditions
Hydrogen sulfide layer from about 15 m; trips run by the guiding operator in winter only.
Typical ranges from published sources, not current conditions.
For orientation, not navigation. Hollow dots are approximate.
Every fact on this page, with its source (6)
| Fact | Status | Source |
|---|---|---|
| The central shaft is about 340 ft (about 104 m) deep.2010 figure; operator says more than 330 ft in places. | Reported | [1] [2] |
| The entrance is about a 100 ft walk from the road, the water lies about 20 ft below the rim, and a crack at about 60 ft leads to the North Passage.Undated trip report. | Reported | [3] |
| A hydrogen sulfide layer begins about 50 ft (15 m) below the surface. | Reported | [1] |
| The entrance is on land held by a local family for generations.2010. | Reported | [1] |
| The operator offers Stargate on winter-only guided trips to South Andros.Provider claim. | Reported | [2] |
| Coordinates are for The Bluff settlement (GeoNames), not the entrance.Area-level only; private land. | Reported | [4] [2] |
Verified: stated by an official or primary source we opened. Reported: from a secondary source only. Sources conflict: the note gives both versions. May be out of date: the newest source we found is old.
Written in our own words from the sources above. Report a correction