Huarco

Huarco was a coastal confederation in the Cañete valley south of Lima, joining the lower-valley Guarco and the middle-valley Lunahuaná. Its curaca Chuquimanco ruled from fortresses, including Canchari behind the Huarco wall; the valley had rich irrigated fields.

In the 1450s the Incas invaded under Capac Yupanqui, but four years of war failed to break the valley. They built Incahuasi and cut irrigation canals. A ruse credited to Mama Ocllo Coya drew defenders from their forts for a fishing rite; the Incas struck, hanged surviving leaders at Canchari and replaced displaced inhabitants with mitmaq settlers.