Chilchos Valley Revisited. Life Conditions in the Ceja de Selva, Peru, Paperback/Carolina Espinoza
Settlements and terraces from the Chachapoya and Inca cultures in the Ceja de Selva (high jungle) witness of an ample use in pre-Hispanic times. Later after a drastic declination of the population in the colonial period the Chilchos Valley was forgotten in hundreds of years and then rediscovered and revisited in 1900.