Female masks have two pairs of round mirrors for eyes; small masks, representing Yali ("the child") have two vertical horns. All Nyonyose masks are worn with thick costumes made of the fiber of the wild hemp, "Hibiscus cannabinus". In the old days only the northern Nyonyose in Yatenga and Kaya, and the eastern people around Boulsa allowed their masks to be photographed. The people in the southwest forbade photography because it did not conform to the "yaaba soore", the path of the ancestors.