from the informational placard:
The Kwoma are a group of people living in the Washkuk Hills north of the Sepik River in northeastern New Guinea. Most Kwoma villages have, or had, one or two ceremonial houses, consisting of a rook reaching nearly to the ground and supported by posts and beams. These structures have no walls, and the sides are left open except when rituals are taking place inside. A finial (yaba), carved with images of supernatural beings, projects from each gable. The decoration of Kwoma ceremonial houses was formerly less extensive that it is today, but since the 1970s, the amount of ornamentation has increased. The supporting wood architectural elements are now carved and painted, and paintings typically cover about half the roof’s interior.