エル・タヒン
Unlike other sites in the state, Yohualichan was dominated by coastal groups, which eventually abandoned it in the face of incursions from peoples from the central highlands. The site was a ceremonial center which was probably dominant over other similar sites. Containing niched pyramids as well, it is related to the El Tajín site in Veracruz. There is also a residential area, but it has not been studied.