In the Andes the Spanish found the devout remnant of an empire and later discovered that people declared Christian were still feeding their mummified ancestors in mountain caves. The Church answered with the Extirpation of Idolatries. The episode follows the parish system, the mines of Potosí, the use of Quechua and Aymara, and Felipe Guaman Poma's letter to the king.
Standardizing Quechua both preserved the language in print and flattened dialect diversity. Records of the Extirpation, often written by the extirpators, make its scale hard to fix, and Guaman Poma's chronicle is both testimony and a strategic plea. How Christian the Andes really became remains debated.