X'Batún
Open cenote in San Antonio Mulix (Umán), about 50 km south-west of Mérida, run by the local community together with neighbouring Dzonbakal. A sunlit, vegetated pool leads into a twilight-zone cavern on a debris slope; a UNAM study sampled the cavern at 24–28 m and two dark-zone cave passages at 38–44 m. The water is freshwater and well oxygenated throughout. Operators describe light beams, speleothems and roots along the walls.
depth: 0–28 m