The entire Yucatan peninsula is formed of limestone and thousands of years ago it was covered by the sea. Limestone's natural permeability and the amount of rainfall have luckily left us with some authentic natural swimming pools called "cenotes" (from Mayan, "Tz'onot"). The Ik-Kil cenote is near the Chichen Itza archeological zone and is gorgeous with fresh, temperate water. It's not too crowded if you avoid the peak season.
The Ik-Kil cenote is two miles from the ruins of Chichen Itza, right near the Dolores Alba hotel. Cenotes are cavernous holes in the rock which have captured rainwater and created subterranean lagoons. It's incredible to go swimming in such a giant natural fresh-water swimming pool with the lilies and the perches.
This is perfect place for swimming in the clear blue water. This natural swimming pool is 196 feet wide and about 130 feet deep, it is an open cenote about 85 feet from the surface. The Mayan Pool is popular tourist destination. The pool was used by Red bull to host their Cliff Diving World Series in 2012. Participants from around the world came there and experienced the thrilling adventure. Here are some more photos: 'https://www.worldfortravel.com/2013/06/27/ik-kil-cenote-narural-pool-of-mexico/'
It is a beautiful place... a natural pool with waterfalls and green vegetation hanging all the way down to the clear crystal water, which is perfect to swim and snorkel. There is a restaurant and small palapa homes for overnight stays. You can book a tour here 'https://www.entertainment-plus.net/tours/tour.asp?code=chichenikkilpriv...' Entertainment Plus is a very reliable company you can check their reputation on TripAdvisor or also here
