Upon reaching the Gulf coast, Quetzalcoatl spreaded his mantle over the sea and disappeared, that is how old traditions of the Mesoamerican people tell the story, and also say that the God assured it would return to the same place. But the promise of his return undermined the will of resistance of the Mexicas and helped the purposes of the conquerors. These pages are dedicated to clarify the symbol, myth and the cult of Quetzalcoatl.