Tolantongo Thermal Waters
Tolantongo's thermal waters emerge at a constant 36°C from deep within the Sierra Madre Oriental, with no artificial heating. Unique mineral properties in Mexico.
What are Tolantongo's thermal waters?
Tolantongo's thermal waters are underground waters heated by deep geothermal activity that emerge in the Tolantongo Canyon, municipality of Cardonal, Hidalgo, at a constant temperature of 36°C. They are 100% natural: the heat comes from underground geothermal activity and not from any artificial heating system.
The formation process of these waters is as follows: rainwater seeps into the ground, descends to rock layers heated by the Earth's geothermal gradient, becomes mineralized by dissolving minerals from the rock, and finally emerges through fractures in the canyon via the thermal springs visible in the grottoes, the river and the pools.
The chemical composition of Tolantongo's thermal water includes calcium carbonates (which deposit travertine in the pools), bicarbonates, sulfates and trace minerals. This composition is responsible for both the characteristic hardness of the water and the documented relaxing effect of prolonged thermal bathing.
🌡️ Constant 36°C
The temperature does not vary with the seasons. In winter, mist forms over the water when it meets the cold air.
🪨 Travertine deposits
The calcium carbonate in the water deposits layers of travertine in the pools, slowly and naturally modifying their shape.
⚗️ Geothermal origin
Heated by the thermal gradient of the Earth's interior. The same process that creates geysers and volcanoes.
Photo Gallery
Discover the natural thermal springs and pools at Tolantongo
