Tamul waterfall is a waterfall of Mexico, the largest waterfall in the state of San Luis Potosi, at the top of the Santa Maria River canyon, 300 m deep. The Tamul waterfall is 105 meters high. It is located to the north of the municipality of Aquismón, about 45 minutes from Ciudad Valles.
It is formed by the fall of the waters of the river Gallinas, which is integrated by others that are born in the municipality of Tamasopo, San Luis Potosi. In the 1960s, locals called the waterfall “La Sonadora” because of the crash of its fall in times of rain.
The Santa Maria River divides Tamasopo and Aquismón in direction N-S and the river Gallinas in the E-O; Ethnically, it is also a border between teeneks and pames (Xi’oi, pronounced Shihuí or Chihui and not Choy or Xoiu as it appears in many writings).