http://unchartedruins.blogspot.mx/2015/07/the-pyramid-of-xochicalco-monument-to.html
Snippets:
1. There is also abundant evidence of the association of Quetzalcoatl with comets. In its starry aspect, Quetzalcoatl was associated with the planet Venus, being the brightest “star” in the night sky.
Venus was often referred to as the “smoking star” [
3], a name that the ancient Mexicans also associated to comets [
4]. This makes Quetzalcoatl also an astral deity, somehow associated with wind, fire, the planet Venus and comets (as well as, interestingly, with water).
2.
The overall picture is a highly suggestive of a fiery catastrophe terminating in a giant flood that consumed the original homeland of the gods.3. A deluge seems therefore to have been responsible for the final destruction and sinking of the island of the gods, after it was first hit by a fiery catastrophe (the high flames rising from the temple) possibly caused by the impact of a large celestial body, such as a comet.
The seated figures (10 in total), could represent the survivors from this catastrophe leaving towards the different cardinal directions and spreading into the world, carried by the waves (on what appears to be a boat of snakes, again reminiscent of the legend of Quetzalcoatl). This company of gods or demi-gods, whose leader can be identified as Quetzalcoatl – the feathered serpent – (himself depicted in a sort of “boat” on the sides of the main entrance stairway), was probably at the origins of the city of Xochicalco, or seen perhaps as a mythical ancestor to the city’s royal lineage.
4. If the above interpretation is correct, then the pyramid of Xochicalco might be interpreted as a monument erected to commemorate the mythical ancestry of the lords of Xochicalco, descendants from a company of gods that were the sole survivors of a cataclysm that destroyed and sunk their primeval homeland, the “
Island of the Winds”.
This cataclysm appears to be related to the impact of a comet or another celestial body, and there is moreover a suggestion of cyclical or recurring cosmic events. In this sense, even the calendric glyphs on the pyramid of Xochicalco might be interpreted as referring to some recurring astronomic event, perhaps the passage of a comet, which was believed to cyclically bring devastation to the world.The story goes on with the arrival of this company of gods, the “Lords of Time”, to Mesoamerica, where they founded a number of cities and temples, taught agriculture, astronomy and the arts of civilization to the still primitive inhabitants of the valley of Mexico, and also established a lineage of kings to whom the rulers of Xochicalco and other places in Mesoamerica traced back their ancestry and, ultimately, their divine right to kingship.