Cenote Dos Ojos

Cenote Dos Ojos lies near Tulum on Mexico's Yucatan Peninsula, formed within the region's porous limestone karst by dissolution and collapse. Its name, meaning Two Eyes, refers to a pair of connected, roughly circular sinkhole openings sharing a single underlying cave passage, filled with exceptionally clear fresh water. The cenote is the surface entry point to Sistema Dos Ojos, one of the longest surveyed underwater cave systems in the world, its passages lined with stalactites and stalagmites that formed during past glacial periods when the caves were dry, before rising sea levels flooded them. Dos Ojos is a major destination for cave diving and snorkeling and has yielded scientifically significant finds, including ancient human and animal remains preserved in its flooded chambers. This entity documents Cenote Dos Ojos specifically as a geological formation, a twin-opening karst sinkhole forming the surface access point to one of the world's longest mapped underwater cave systems.