abstract:Lof (Spanish: levo and lov) or caví (Spanish: Cahuín); formed the basic social organization of the Mapuche, Huilliche and the extinct Picunche peoples, consisting of a familial clan or lineage that recognizes the authority of a lonco (cacique). The Lof or caví is formed by diverse families that share the same territory and they are considered mutually related, descended from a common ancestor.