It consists of a small temple to Tepoztēcatl, the Aztec god of the alcoholic beverage pulque.
The temple became important enough to attract pilgrims from as far away as Guatemala, although the cult of Tepoztecatl was local to this site.
[1][2] The Sierra de Tepoztlan and the temple site are within El Tepozteco National Park.
[1] Dwellings were built on the terraces on the eastern side of the site in order to house the resident priests and their helpers.
From this, some archeologists have concluded that this was the year in which the temple was built, others suggest that these stones were added later to commemorate the death of the Aztec emperor.