Mask

Masks for sale in Lemo, Tana Toraja
Originally uploaded by halftheworldaway

From: wikipedia

Family is the primary social and political grouping in Torajan society. Each village is one extended family, the seat of which is the tongkonan, a traditional Torajan house. Each tongkonan has a name, which becomes the name of the village. The familial dons maintain village unity. Marriage between distant cousins (fourth cousins and beyond) is a common practice that strengthens kinship. Toraja society prohibits marriage between close cousins (up to and including the third cousin)—except for nobles, to prevent the dispersal of property.
Before the start of the formal administration of Toraja villages by the Tana Toraja Regency, each Toraja village was autonomous. In a more complex situation, in which one Toraja family could not handle their problems alone, several villages formed a group; sometimes, villages would unite against other villages. Relationship between families was expressed through blood, marriage, and shared ancestral houses (tongkonan), practically signed by the exchange of buffalo and pigs on ritual occasions. Such exchanges not only built political and cultural ties between families but defined each person's place in a social hierarchy: who poured palm wine, who wrapped a corpse and prepared offerings, where each person could or could not sit, what dishes should be used or avoided, and even what piece of meat constituted one's share.