Thermal Swimming at Tolantongo
Bathing in natural 36°C geothermal waters inside limestone grottoes, tiered pools and a 1.5 km thermal river. The central activity at Grutas de Tolantongo.
Available swimming zones
The destination offers three distinct zones for thermal swimming, each with unique characteristics.
Thermal Grottoes
36°C water channel inside natural limestone caves. The most unique experience.
Tiered Pools
6 cascading natural rock pools. Varied depth, suitable for all ages.
Thermal River
1.5 km of natural thermal river inside the canyon. Open and underground stretches.
Why is thermal swimming at Tolantongo different?
Thermal swimming at Tolantongo does not take place in a man-made pool: it happens in natural limestone formations, inside caves with ceilings up to 15 meters high and in a river that flows through the interior of an 800-meter canyon. The constant 36°C temperature year-round allows you to enjoy bathing in any season.
The thermal effect of 36°C water has documented relaxing properties: it dilates blood vessels, reduces muscle tension and generates a sustained feeling of well-being. The high mineral content of the water (carbonates, bicarbonates and sulfates) adds additional properties to the bathing experience.
Unlike conventional spas that artificially heat water, at Tolantongo the heat is 100% geothermal: it comes from deep within the earth without any artificial intervention.
Photo Gallery
Discover the thermal swimming experience at Tolantongo
