Once every 52 years, Aztec priests let the fire die out. The high priest ... and nose of the mask appear to form a butterfly, another symbol of renewal associated with Xiuhtecuhtli.

Yet another hypothesis proposes that the whistles were intended as symbols of a deity ... as well as from three noise whistles (part of Aztec fire snake incense ladles). They took CT scans ...

The darker turquoise mosaic pieces on the cheeks and nose of the mask appear to form a butterfly, another symbol ... according to Aztec mythology, sacrificed himself to the fire and emerged ...