Teotihuacan (11)

Source: WTL© digitized analogue photograph taken on site.
Notes: Here you see the drama of a scupture of a serpent's head (god's head: remember that to pre-Columbian peoples the represented object was the thing or god that the object represented) protruding from the sloping side of the temple.
Humanities question: What elements of the composition and content of this photograph illustrate, for you, salient features of the Aztec civilization, religion, cosmology, and craftsmanship? If you prefer, use the image in Teotihuacan #12 instead of this one to answer this question here.