Ọ̀kọ̀nkọ̀ masks at Umuowa in the central-Igbo area (Imo) on the cover of African Arts. Photographed by Eli Bentor, March 1988. The Okonko masquerade is a central cultural and social institution among the Southeastern Igbo people of Nigeria, particularly in the Umuahia area of Abia State. It is a vital expression of the Ekpe society, a…