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Named after a site in the Upemba depression of the valley of the upper Lualaba in southeastern Zaire, this is the initial phase of the local Early Iron Age, precursor of the Kisalian. Dated to between the 5th and 8th centuries ad, it is poorly illustrated by the research so far undertaken, but the associated pottery shows affinities with that from settlements of the same age in the Copperbelt area further southeast.