Soweto masks are unique to the region around Sierra Leone and are worn by senior members of the all-female Sandy Society during rite-of-passage which is Circumcision ceremonies that signify a girl’s transition to adulthood. They are carved expressions of local ideals of feminine beauty, health and serenity that vary widely in their detail. They are also used during ceremonies such as fertility, spiritual, death and birth.
https://www.khanacademy.org/humanities/ap-art-history/africa-ap/v/sande-bundu
Sierra Leone 