Real de Catorce (San Luis Potosi) is a city in Mexico, is located in the state of San Luis Potosi. The population of 1,105 people.San Luis Potosi officially Free and Sovereign State of San Luis potosí stado Libre y Soberano de San Luis Potosí) is a state in Mexico. The territory of the state is 62 848 km2.
Across the state, is located the cave of the Swallows (Spanish Sótano de las Golondrinas). Cave takes 2nd place in Mexico and 18th in the world in the depth of the solid of the well 376 meters. It was carried out of the filming of the movie “Sanctum”.