Swimming in a Cenote, Yucatan, Mexico

Beneath the flat limestone of the Yucatan Peninsula runs the Sac Actun cave system – one of the longest underwater cave networks on earth, with over 350 kilometres of explored passage and more being mapped each year. When the cave ceiling collapses, a cenote forms: a hole in the ground opening to the water table below. There are estimated to be between 6,000 and 10,000 cenotes across the Yucatan, ranging from small swimming holes used by local families to cathedral-sized underground chambers with stalactite formations and visibility clear enough to see 30 metres in any direction.

The Maya called them dzonot (from which “cenote” derives) and considered them sacred portals to Xibalba, the underworld. Archaeological dredging has recovered thousands of objects from cenotes: jade, gold, ceramics, and human remains from ritual offerings spanning centuries. Swimming in one involves a geological and historical experience simultaneously. This is not a pool built for tourists – it is an ancient water system with an active religious history, and the feeling of that is present when you are in the water.

Types of Cenote

Open-air cenotes have exposed water under open sky, surrounded by limestone walls and vegetation with shafts of light on the surface. Semi-submerged cavern cenotes have partially collapsed ceilings with dramatic shafts of light entering through the openings – the kind that photograph well. Fully submerged cave cenotes require a headlamp and are the domain of cave divers, though some have walkable lit passages available to non-divers.

Which Cenote to Choose

Cenote Ik-Kil, 3 km from Chichen Itza, is the most photographed: a circular open pit 40 metres deep with tropical vines hanging from the rim to the water surface. Beautiful and heavily visited when tour groups stop there. Go before 9am or after 4pm.

Gran Cenote between Tulum and Playa del Carmen has both open-air and cave sections with crystal-clear water and good visibility for snorkelling. Less crowded than Ik-Kil because it requires more independent effort to reach.

Dos Ojos (Two Eyes), near Playa del Carmen, is an extensive cave system with connected cenotes. The visibility runs 30 to 40 metres in the cave sections and the geological formations are impressive. This is the cenote for serious snorkellers and divers.

Cenote Zaci in the centre of Valladolid is an open-air cenote requiring less organisation than the famous alternatives, used regularly by local residents. Less dramatic than Ik-Kil but genuinely accessible and not overrun.

Practical Notes

Entry fees run 50 to 150 Mexican pesos at most cenotes. Reef-safe sunscreen is required at nearly all of them – conventional sunscreen chemicals damage the water ecosystem and you will be directed to showers if you arrive wearing it. Bring a padlock if you want to secure valuables in the lockers most cenotes provide. Bring a light source for any cave section.

Where to Base Yourself

Valladolid is the most practical base for cenote exploration without paying resort prices. It is 40 km from Chichen Itza, 2 hours from Tulum, and an easy drive to the main cenotes in the region. It has good restaurants, colonial architecture, and accommodation at a third of the price of the Cancun resort corridor.

Tulum works for Gran Cenote and Dos Ojos. Playa del Carmen gives access to the widest range of cenote options within an hour’s drive.

Food

Cochinita pibil – pork slow-cooked in a pit with achiote and sour orange – is the dish to eat in the Yucatan. In Valladolid, the restaurants on and near the main plaza serve it at lunch as tacos with habanero salsa and marinated red onion. Sopa de lima (chicken soup with lime and toasted tortilla strips) is the regional complement. Both are significantly better and cheaper here than anywhere in the resort corridor.