San Mateo Atenco
San Mateo Atenco is one of 125 municipalities in the State of México in Mexico. The municipal seat is the town of San Mateo Atenco. It lies west of the Federal District (Distrito Federal) near the municipality of Metepec, in the central part of the state of México, and is part of the Toluca urban area bordering the city to the east. The name Atenco is derived from the Nahuatl language. It means “In the water’s edge”, from atl(water), tentli (edge) and co (in). The city Enormous mammoth fossils have been found near the Lerma River, where San Mateo Atenco is today. The first settlers used mammoth fossils as tools for hunting. This area has been the scene of the development of cultural groups that transited through the Toluca Valley for 20 thousand years. During the pre-Classic period (2000 B.C.), agricultural development created small settlements. During the Classic period (250-900 A.C.), the settlements had cultural relations with Teotihuacán. Atenco was founded by the Matlazincas (Men of the net). Matlazincas were a militarist society and dominated the Toluca Valley during the period from 750 to 1162. The pre-Hispanic town was founded by Xolotl, the lord of Texcoco in the 12th century.