“The Galoa people settled in the lakes area, near the Atlantic shore, and carved rectangular masks bearing triangular motifs designed with pigments. These masks are worn during important ceremonies such as the death of a prominent chief or the birth of twins. Through the power and authority believed to be inherent in them, the bearer of the mask can regulate the social life of the Galoa villagers.”

Source:
Baquart, Jean-Baptiste. The Tribal Arts of Africa. New York: Thames and Hudson Inc. 1998. Print.