The easiest is:
Going from CDMX GDL , Leon to SLP
SLP➡️Carretera 57 Towards Matehuala/Saltillo, at Km. 70
Take the SLP/Rioverde Toll Road (70D) and continue for 130km.
Arriving at the junction, turn left to continue towards Ciudad Valles along the highway (70 Libre) for 30 km.
Arriving at the Caseta de Rayón, continue on the (70D) now it becomes a highway.
Continue for approximately 120km towards Ciudad Valles - Tampico.
At Km 120 + ~ is the Highway Exit, Heading for Tamazuchale.
Continue on the free highway (85 Mexico-Laredo) for approximately 80km.
At the junction of the (Y Griega) take the deviation to the right along the highway (120) for 15 km towards Xilitla.
Arriving at Km 15, see the sign at the entrance that says "A las Pozas" take the road to the pools for 2km. And you got to:
"The Peristyles"
