via The Yoruba
Sungbo's Eredo is a rampart or system of walls and ditches that is located to the south-west of the Yoruba town of Ijebu-Ode in Ogun state, southwest Nigeria (6.78700°N 3.87488°E). It was built in honour of the Ijebu noblewoman Oloye Bilikisu Sungbo.[1][2] - Wikipedia