man-made structure in the world, larger than Sungbo's Eredo, also in Nigeria. It enclosed of community lands. Its length was over of earth boundaries. It was estimated that earliest construction began in 800 and continued into the mid-15th century.

The walls are built of a ditch and dike structure, the ditch dug to form an inner moat with the excavated earth used to form the exterior rampart.

The Benin Walls were ravaged by the British in 1897. Scattered pieces of the walls remain in

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