To the northwest of the river basin of Mexico the valley of Teotihuacán delimited to the north by the Fat Hill is opened before us, to the south by Patlachique, the east by the level ones of Apam and it extends towards the west on the same river basin. The formation of the valley, like the rest of the river basin, is of volcanic origin, reason for which the lava outcrops are common. Although today the valley is deforested in its totality, exists information on an atmosphere of forests that in addition were rich in fauna. The climate, is considered, was warm humid. Teotihuacán influences and participates in very important way in all the regions of Mesoamérica and at the same time incorporates important characteristics of its architecture; it is by that the teptihuacano style will extend, as it is observed later in Tula, Xochicalco, the Tajin, Cholula, Cacaxtla and Mexico-Tenochtitlan. The religion that reigned in Teotihuacan era of politeista type, and their main Gods were Tlaloc and Quetzalcóatl.
Tlaloc was the God of rain, according to the mexica culture, but in Teotihuacan, the possibility that exists it had had greater attributes. In some studies, it is speculated on that Tlaloc could have been not only one deity related to rain, but also with the Earth, because both elements have to do with agriculture, that it was the base of all sedentary town; these hypotheses are based on the following thing: Tlaloc is a Nahuatl word that probably derives from the word tlatoa, that means “to run” and for that reason its relation with water torrents, but the expert Thalma Sullivan explains that Tlaloc has more affinity with the term tlalli, that means “earth”. The representation that for of Tlaloc has been the one of being with anthropomorphous characteristics and animals, of great eyes and bulging, adorned with a hairdo of pens, with the superior part of its face in form of bird and eyeteeth in the mouth, a.