Angelita Cenote

Cenote Angelita is a deep freshwater cenote famed for a dramatic halocline and a dense hydrogen sulfide cloud that forms an "underwater river" around 25-30 m, producing an eerie scene with submerged tree branches and a column of debris. The site is a vertical sinkhole over 60 meters deep with extensive stalactites and a prominent stalagmite called the "Angel," and many divers describe the chamber as cathedral-like. It is widely regarded as a premier cave/cavern dive popular with advanced and technical divers. Access is from shore via stairs and a ladder into a fenced cenote pool, with divers descending a line from a surface platform into a steep cylindrical chamber. Typical guided profiles descend to about 35-40 m (site reaches over 60 m), passing a clear fresh-water layer into the halocline and encountering a roughly 1-3 m thick hydrogen sulfide cloud at about 25-30 m; visibility is generally good in the upper fresh layer but very limited within the cloud. Water temperature in the upper layer is about 25°C, there are no currents in the freshwater cavern, and dives typically last 30-40 minutes. Because of the depth and overhead environment this site is suitable only for well-trained, experienced divers (Advanced Open Water or cavern/cave certification); dives below recreational limits require planning for decompression and appropriate gas mixes. The hydrogen sulfide layer can momentarily sting the eyes, and divers should remain off the vertical shaft walls and avoid disturbing sediment.