Teotihuacan is the largest pre-Columbian archaeological site in North America. The city is located in the valley of Anahuac in Mexico, about 40 kilometers northeast of Mexico City. Teotihuacan was built between the second and seventh centuries AD, and its Nahuatl name means "place where gods are made ".
The city was conceived iaccording to a great urban design that wasarticulated around a central axis, the Avenue of the Dead, which is dominated by the giant mole of the Pyramid of the Sun, located in the heart of the Via Sacra, and the great pyramid of the moon that rises to the north.
Afterwardsthe town was inhabited by the Aztec people who always considered it as an important religious and ceremonial place, as an evocative pilgrimage destination and also an important trade area. No doubt Teotihuacan has been even the cradle of a flourishing artistic of ceramic, stone and painted stucco.
Inside the grand monumental area, became part of the cultural heritage of mankind, have been found many stone masks used during funeral ceremonies.
Half open mouth, geometric features of the face, cavitys of the eye as slit that usually were filled with discs of shell or obsidian, and the essential stylization are just some of masks' details that give a solemn and austere expressiveness.

Probably the masks were applied on the deceased's face during the ceremony.
Before their use they were carefully carved in flattened relief of basalt, jade, andesite or other precious stones by the artisans of the states of Guerrero and Puebla.
In addition to religious purpose masks were used also during the dances. In this circumstance Aztec's aim was to lead the viewers to the highest emotional intensity in which they lost all control of themselves and believed that their votes for the favor of the gods had been heard.