You can call it Yucatan Maya Mythology, but it was actually their Religion. It's kind of how we call all the old music "Oldies". One day, maybe 1000 years from now, Christianity and Islam will be refered to as Mythology! Then you can learn all about the talking snake, the guy who lived in the whale, and the three bears in school!
Back on subject: The reason this item is so pricey~> It is used to Synthesize the Grim Cuirass!
According to Wiki(Not My wording, what with me not having a major in ancient religions or cultures.):
In Yucatan Maya mythology, Kukulcan(Kukulkan) ("feathered serpent") was a supreme feathered snake god, one of all three groups of gods who created Earth and humanity. He was the god of resurrection and reincarnation. He taught mankind civilization and agriculture. He controlled the four elements - earth, fire, air and water. He is described as comparable to the Quche Maya Gucumatz, and the Aztec Quetzalcoatl. He is less of a god than Quetzalcoatl because he does not control the sun and wind.
