Elysia Gonzalez, right, helps Caterine Sanchez adjust her hat inside the ladies room ahead of the Belmont Stakes horse race, Saturday, June 10, 2023, at Belmont Park in Elmont, N.Y. (Photo by Mary Altaffer/AP Photo)

Pilgrims ride their horses on their way to the shrine of El Rocio in Villamanrique, Spain, on Saturday, June 4, 2022, during the annual pilgrimage in which hundreds of thousands of devotees of the Virgin del Rocio converge in and around the shrine. (Photo by Joan Mateu Parra/AP Photo)

American dancer and model Dita von Teese performs a strip-tease, 23 October 2006 at the Crazy Horse saloon in Paris. Von Teese is giving eight performances of her show “the bath” at the famous Parisian cabaret. (Photo by Francois Guillot/AFP Photo)

A cenote is a natural phenomenon, a sinkhole in the Earth’s surface. The Yucatan Peninsula in Mexico has an estimated 7,000 cenotes because it is primarily made up of porous limestone. For millions of years, rainfall slowly ate away at the limestone and a huge system of underground caves and caverns was formed. Many filled with water from rain or from the underground water table. When the roof of a water filled cave collapses, a cenote is born. The water found in a cenote may be fresh water, salt water, or both. Structurally it may be completely open, like a lake, almost completely closed with just a small opening at the top, or somewhere in between.

Boys and younger men from the Ilosvai Selymes Peter folk dance group pour buckets of cold water on a girl as they attend the traditional watering of local girls on Easter Monday in Komarovce, Velke Trakany, Slovakia on April 10, 2023. During Easter Holy Week, the ancient tradition of Easter sprinkling known as “watering of the girls” when Hungarian boys visit their female friends, recite poems, and pour water on them, and in exchange the girls offer the boys food and drink. (Photo by Robert Nemeti/Anadolu Agency via Getty Images)

The Dynasphere, an electrically-driven wheel, invented by Mr. J. A. Purves of Taunton and his son. It had 2.5 horse power and once attained a speed of 25 mph. (Photo by Fox Photos/Getty Images). 1932

A musician from the Rajan Band, Kotla Mubarakpur holds on to a decorated horse as he and others wait prior to performing at a wedding on November 22, 2011 in New Delhi, India. (Photo by Daniel Berehulak/Getty Images)

Two drunk race-goers make their way home after the last race of the third day of the Royal Ascot horse racing week June 19, 2003 in Ascot, England. (Photo by Scott Barbour/Getty Images)