Tongkonan

The tongkonan is the ancestral house of the Toraja people of the highlands of South Sulawesi, Indonesia. It stands on wooden piles and is dominated by an oversized saddleback roof whose ends sweep upward, often compared to the hull of a boat. The name comes from the Torajan word tongkon, "to sit".

Roof construction

The roof is built from layers of split bamboo bound with rattan, laid across the rafters and tied lengthwise to form a thick, curved covering. Bamboo culms are also used as the under-roof. The structure below consists of large vertical posts joined by horizontal tie beams; hanging spars and angled members create the curve, and a free-standing pole often supports the projecting ridge at the front.

Because the roof extends well beyond the house at both ends, it shelters the front and rear and gives the building its dramatic profile.

Meaning and decoration

The tongkonan is the centre of Torajan family and social life, linking living relatives to ancestors and descendants. Origin stories say the first tongkonan was built in heaven on four poles with a roof of cloth, and the first ancestor copied it on earth. Traditionally three types were recognised, from the house of highest authority (tongkonan layuk) to houses of ordinary family members (tongkonan batu).

Walls are covered in carvings painted red, black and yellow. Buffalo horns mounted in a vertical row on the front post signal the family's status, and a carved wooden buffalo head may crown the facade.

Modern change

Building a tongkonan is labour-intensive and usually involves the extended family. Zinc or corrugated metal sheets and nails are increasingly used in place of bamboo layers, especially for repairs. The form is no longer reserved for nobility, and remittances from Toraja living elsewhere in Indonesia help fund larger houses. The silhouette also appears on government buildings in the region, such as administrative offices in Rantepao.