Thermal nature · Hidalgo

The Thermal Grottoes of Tolantongo

Natural limestone caves formed by thermal waters that emerge at 36°C (97°F) from inside the mountain, within the Tolantongo Canyon.

36°CConstant temperature
1.5 kmThermal river
6Tiered pools
800 mCanyon
Interior of the Tolantongo thermal grottoes with water at 36°C

What makes the Grutas de Tolantongo unique?

Grutas de Tolantongo is a system of natural caves formed in limestone by the action of thermal waters that emerge at 36°C (97°F) from inside the mountain. They are located within the Tolantongo Canyon, municipality of Cardonal, Hidalgo, managed by the indigenous Naehnyue community of Ejido El Alberto.

Unlike conventional water parks, the grottoes are a natural formation without artificial intervention. The thermal water emerges from fractures in the limestone through a geothermal process that maintains the temperature at a constant 36°C year-round.

The interior features travertine formations, ceilings up to 15 meters high, and a continuous sound of flowing water that defines the sensory experience of the place.

🌡️ Geothermal temperature

A constant 36°C year-round from deep springs, with no artificial heating.

🪨 Natural travertine

Walls and pools of limestone shaped by thermal water over centuries.

👨‍👩‍👧 Naehnyue Community

Managed by Ejido El Alberto with a limited daily visitor capacity to preserve the ecosystem.

Plan your visit to the grottoes

🎟️

Prices 2026

Admission, cabin, and camping rates.

See rates
🚗

How to get here

Routes from Mexico City, Pachuca, and Queretaro.

See routes
🏕️

Lodging

Cabins and camping inside the canyon.

See options →
📋

What to bring

Complete packing list for your visit.

See list →

Grottoes videos

Destination gallery

Images of natural formations and thermal waters

Questions about the grottoes

Can you swim inside the grottoes?
Yes. There is a thermal water channel of 40-80 cm where visitors can bathe. The constant 36°C makes the experience very pleasant even in winter.
Do you need special equipment?
No. Water shoes with grip, a swimsuit, and a towel are recommended. The surfaces inside the grottoes can be slippery.
Are the grottoes lit?
There is basic lighting in the main areas. It is recommended to bring a small flashlight to explore deeper sections.
Need help?