A near-perfect circle 318 m across in the middle of a coral atoll, made famous by Jacques Cousteau in 1971.
40 m
124 mRecreational limit
Bathymetry and profile
The reef rim is 1-3 m deep. Vertical walls fall to an overhang at about 40 m, where giant stalactites hang. Below that the shaft narrows to a floor of silt and sulphide at 124 m.
Dashed line: 40 m recreational diving limit
Features
Stalactites formed when the sea level was much lower during the Ice Age
