Omitlán means “place between two” making reference to two big rocks forming el Zumate, which has an altitude of 3,000 meters above sea-level, on top of it we can have a panoramic scenery that goes from El Chico National Park, the towns of Omitlán, Velasco and Venta de Guadalupe, as well as Real del Monte, Atotonilco El Grande and part of Huasca municipality. From this point we can very well see the mine tailing dams of Velasco. The tailing dams (known as Jales in Spanish) are the residues of the ores processed after extracting silver and gold. Seven ore processing plants were established in this small town, this gives us an idea of the importance of the place between the end of the 19th century and the beginning of the 20th century; Sánchez and Velasco plants processed Pachuca’s ores using the Freiberg system while the Guerrero plant was considered the most modern of the country at the moment of its inauguration in 1908.