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CUERNAVACA
Chontalcoatlán
The first part of this adventure begins in the open sky, until you reach a ravine where, by rappelling, you reach the entrance of a cavern where the underground river runs. The rest of the way is done inside natural cavities in the underground river Chontalcoatlán, in the south of the state, where you can admire impressive formations such as stalactites, stalagmites, large vaults, tunnels, gates and waterfalls, carved by nature for thousands of years, including a spectacular entrance of light known as "La Ventana". In some sections you will have to swim.
You can have the unique experience of spending the night in the cavern 60 m (197 ft) underground, an adventure you will never forget.
This expedition is of intermediate difficulty and it must be taken into account that the temperature of the cave drops considerably compared to that of the outside, reaching between 16 and 20ºC and the water temperature is between 10 and 18ºC.
The minimum age is 14 years and the maximum is 54 and must not exceed 95 kg. It is located an hour and a half from Cuernavaca.
San Jerónimo
Another option is the San Jerónimo underground river. When following the course of the river, you sometimes have to swim, climb over rocks and rappel down a distance. This landscape is unique since you will have to walk in a cave and swim through narrow passages for more than 7 km.
This expedition takes approximately 6 to 8 hours and the minimum age is 14 years and the maximum weight is 95 kg. It is located an hour and 10 minutes from Cuernavaca.
Caving in Morelos
Agua Brava
This is a cave formed almost entirely by mud, where you have to crawl to reach an incredible lagoon of crystal clear water in a larger room of the cave. It is entered through a narrow entrance and in some stretches the mud can reach up to your waist, so you will feel very good letting yourself go down a 4 m (13 ft) slide to reach a pool of water.
This tour consists of 1.5 km and will take you from 3 to 4 hours and it does not have a high level of difficulty.
Azul Profundo
This cave offers you another type of adventure, you will have to go through narrow rock corridors, where it will be necessary to crawl and climb. The first section is 1 km long and is totally dry until you reach a place that will surprise you with the beautiful pools of crystal clear turquoise water. Next you will have to pass other very narrow passages where it seems almost impossible to pass, even the guides will indicate what positions and movements to make in order to continue advancing. You will also have to plunge into the water in small siphons.
Something that adds beauty to this cave are the small pieces of marble embedded in the rock that shine like stars when lit.
The experience takes from 4 to 6 hours and has a degree of intermediate difficulty. It cannot be done from June to December, since the cave is mostly flooded.
Chichinautzin
You can explore a part of the largest volcanic tube system in Latin America, following a forest trail and rappelling to reach the mouth of the cave. Knowing the volcanic tube passing between large blocks of igneous rock and very small passages is a unique experience.
You can start with the easiest to access, which is Cuexcomates, whose craters reach up to 15 m (49 ft) deep and in which there are several caves that do not exceed 50 m (164 ft) in length.
The next one in difficulty would be the Cueva del Diablo with wide galleries where large tubes join.
San Juan Tlacotenco
In San Juan Tlacotenco, approximately 10 minutes from Tepoztlán, there are two other cavities: the Cueva de la Iglesia (Church Cave), which is accessed by crawling and is distinguished by its beautiful rock formations and for containing opal ore. The second formation is the Cueva del Ferrocarril (Railroad Cave ) which is considered to be one of the most intricate volcanic caves, so you definitely need an experienced guide to explore the cave.
The most difficult in the San Juan Tlacotenco area is the Chimalacatepec Cave, which is believed to be the deepest volcanic cave in America. To enter you have to rappel 15 m (49 ft) and once in the cave you walk through a tunnel, where some archaeological remains were found.
The Cueva del Árbol (Tree Cave) is definitely for experts because to enter you have to descend 118 m (387 ft) but the secrets and surprises of the cave worth the effort.
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