Diego de Landa
What is known of Mayan ritual practices comes from two sources: the extant chronicles and codices of the missionary-ethnographers who arrived with or shortly after the Spanish conquest of Yucatán and subsequent archaeological data. The historical record is more sparse than that for the Aztecs, and can only be reliable in regards to the Post-Classical period, long after the Classic Maya collapse. The chroniclers have also been accused of colonial bias, but the most comprehensive account of Maya society, by Diego de Landa, has been described by modern experts as an "ethnographic masterpiece”, despite his role in the destruction of Maya codices.