Sótano de las Golondrinas


This enormous cave is surrounded by dense vegetation, typical of the Huasteca Potosina region. 512 meters deep and 60 meters wide, with a freefall of 370 meters, the Cave of Swallows is the second largest pit cave in Mexico and amongst the largest in the world. Its limestone walls provide refuge for thousands of birds, including white-collared swifts and green parakeets, which flock from their nests every morning, circling up to the surrounding forests in search of food, only to return in the same manner in the evening.

This spectacle takes place every day at sunrise and sunset and therefore it is recommended that you visit in the morning or in the evening.


We recommend that you spend the night before your visit in San Juan de los Durán. You can also camp at the rim of the Cave of Swallows. The cooperative that manages the property also maintains several cabins, which can be very useful given the wet climate of the region. There is also a small restaurant at the entrance.


  • Walking
  • Bird watching
  • Nature photography
  • Camping


From Jalpan de Serra, take Federal Highway 120 (San Juan del Río – Xilitla) and turn left in the community of La Vuelta to State Highway towards Tancoyol, which will take you to the community of Zoyapilca. There you should make a turn to the road that goes towards Valle Verde. From Valle Verde, continue towards Rancho Nuevo, until you enter the state of San Luis Potosí, where you will pass through the communities of Tansosob and Unión de Guadalupe. Continue until you reach an entrance area to the Cave of Swallows, where you will find a parking lot and a long stairway that will take you to the cave’s rim.