Few natural phenomena define a vacation in Mexico on the Yucatán Peninsula quite like the cenotes. For many of our guests, these crystal-clear freshwater pools carved into limestone are among the most memorable experiences of their entire trip. But what exactly is a cenote, how are they formed, and what types are there? Here you’ll find the most important answers, as well as our recommendations for the region’s most beautiful cenotes.
What is a cenote?
The term “cenote” is derived from the Mayan word “dzonot,” which means “sacred well” or “water hole.” Cenotes are natural openings in limestone that provide access to underground freshwater reservoirs. They are part of one of the world’s largest contiguous underwater cave systems, which extends beneath the entire Yucatán Peninsula. Unlike in many other regions, there are hardly any surface rivers or lakes in Yucatán, which is why cenotes have always been the most important source of fresh water here.
How are cenotes formed?
The formation of cenotes is based on the porous limestone that makes up the entire Yucatán Peninsula. Rainwater seeps through the limestone and chemically dissolves it over long periods of time. This creates underground cavities and cave systems, similar to those found in other karst landscapes. When the ceiling of such a cavity eventually collapses, an opening forms at the surface—a cenote. A particularly large number of cenotes are found along a circular fracture pattern in the limestone that dates back to the Chicxulub asteroid impact 66 million years ago. If you’d like to learn more about this geological context, you’ll find detailed background information in our article on the formation of the Yucatán Peninsula.
What types of cenotes are there?
Not every cenote looks the same. Broadly speaking, there are four types:
Open cenotes (Cenotes abiertos): The ceiling of the cave has completely collapsed, so the cenote looks like an open lake or pond under the open sky. These cenotes are usually well-lit by natural light and are especially popular for swimming.
Semi-open cenotes (Cenotes semiabiertos): Only part of the ceiling has collapsed here. One section of the cenote is still covered by a natural rock roof, while the other section is open. This interplay of light and shadow often creates particularly photogenic effects.
Cave cenotes (Cenotes de caverna): These cenotes are almost entirely underground and are accessible only through a small opening or a cave entrance. Inside, visitors are greeted by impressive stalactites and stalagmites, often illuminated by rays of light streaming through small openings.
Underground cenotes (Cenotes subterráneos): The most difficult type to access, located entirely below the earth’s surface and usually of interest only to experienced cave divers.
Why were cenotes so important to the Maya?
For the Maya, cenotes were far more than mere water sources. Since there are virtually no rivers on the peninsula, cenotes ensured the survival of entire cities and civilizations. At the same time, they were considered sacred sites and gateways to the underworld, Xibalba. Offerings and even ritual objects have been found at many cenotes, such as the famous Sacred Cenote at Chichén Itzá. To this day, this spiritual heritage plays an important role in many Maya communities.
The Most Beautiful Cenotes on the Riviera Maya
The region around Cancún, Playa del Carmen, Tulum, and Valladolid is considered one of the areas with the most cenotes in the world. Among the best known are the Sacred Cenote in Chichén Itzá, the cenotes around Tulum, and numerous less-crowded cenotes inland near Valladolid and Cobá. Many of our excursions take you directly to these cenotes, such as on the tour to Chichén Itzá, the excursion to Tulum and the cenotes, or our tour to Cobá and Punta Laguna.
Practical Tips for Your Visit to the Cenotes
If you want to swim in a cenote, you should avoid using biodegradable, mineral oil-free sunscreen—or skip it altogether—since many cenotes are very sensitive ecosystems. At most cenotes, a quick shower is required before swimming. The water remains pleasantly cool year-round, usually between 24 and 26 degrees, regardless of the outside temperature, which makes cenotes a welcome way to cool off, especially on hot days.
Frequently Asked Questions About Cenotes in Mexico
What does the word “cenote” mean?
The word “cenote” comes from the Mayan word “dzonot” and roughly means “sacred well” or “waterhole.” It refers to a natural opening in limestone filled with fresh water.
How many cenotes are there on the Yucatán Peninsula?
Estimates suggest there are several thousand cenotes on the Yucatán Peninsula, many of which have not yet been fully explored or mapped.
Is the water in cenotes clean and safe for swimming?
Yes, the water in most cenotes open to visitors is filtered groundwater and is generally very clear and clean. Many operators also enforce environmental protection measures, such as requiring visitors to shower before entering the water.
Which cenote is best for families with children?
Open cenotes with easy access and calm waters are usually best suited for families. Our guides will be happy to advise you on which cenote is best suited for your group for a specific trip.
Conclusion
Cenotes are one of Mexico’s most extraordinary natural phenomena and are inextricably linked to Mayan history and culture. Whether they’re open-air swimming holes or mysterious cave cenotes, each cenote has its own unique character. If you’d like to experience this unique natural wonder for yourself, feel free to check out our Mexico tours in German, which regularly include visits to cenotes.
