Introduction to the Pyramid of Quetzalcoatl: The Pyramid of Quetzalcoatl, the Quetzalcoatl, has a total of 366 heads of Quetzalcoatl carved on its four sides, all with protruding round heads. The mouth is wide open, very scary. The monumental steps on the west side of the pyramid are very well preserved and clearly reflect the "ramp and panel" style typical of Teotihuacan architecture, with alternating sloping embankments and vertical panels, often with shallow Relief for decoration.