Cenote Calavera (Temple of Doom)
About 2 km from Tulum towards Cobá, Calavera has three openings – one about 10 m wide and two small ones – that from above resemble a skull, hence the nicknames Temple of Doom and Skull Cenote. Divers enter with a giant stride from roughly 3 m above the water (or by ladder) into a large cavern room with a mound of sediment and rock in the centre. The main attraction is a sharp halocline at roughly 12–15 m that looks like a mirror-like floor, with light beams cutting through the openings. Caving reports say the cave beyond the cavern connects to a larger system (reported as Sistema Camilo).
depth: 0–17 m