Iatmul people
The Iatmul are a large ethnic group of about 10,000 people inhabiting some two-dozen politically autonomous villages along the middle Sepik River in Papua New Guinea. The communities are roughly grouped according to dialect of the Iatmul language as well as sociocultural affinities. The Iatmul are best known for their art, men's houses, male initiation, elaborate totemic systems, and a famous ritual called naven, first studied by Gregory Bateson in the 1930s. More recently, Iatmul are known as a location for tourists and adventure travellers, and a prominent role in the 1988 documentary film Cannibal Tours.
History
In Iatmul legend, the original condition of the world was a primal sea. A wind stirred waves, and land surfaced. A large pit opened, and from it emerged the first generation of ancestral spirits and culture-heroes. The ancestors then embarked on a series of mythic-historic migrations. Where they trod, land appeared. Along these routes, the ancestors created the world through naming. Literally, they named all the features of the world into existence—trees, mountains, stars, winds, rains, tributaries, villages, actions, virtually everything in the world. These names are called totemic names. They are claimed by specific patrilineal groups. Totemic names are magical, and form the basis for the religious system.According to the Iatmul, the primal pit is located near the Sawos-speaking village of Gaikarobi. After emerging from the pit, most ancestors travelled to the village of Shotmeri. From there, they dispersed throughout the region, eventually arriving in each village inhabited today.
Each Iatmul community consists of clans, lineages, and "branches." Membership of a group is conferred at birth through the father, what anthropologists call patrilineal descent. Every village has its own cluster of groups; no two villages consist of exactly the same clans and lineages. Each group tells its own ancestral history of migrations through the region. These tales are encoded in long chains of complex polysyllabic names called tsagi that are known only to ritual specialists. When tsagi are chanted during rituals, the names evoke ancestral migrations and different places and features of the landscape created by the group's mythic ancestors during their long-ago travels.