An Iron Age cemetery on the Lualaba River, southeastern Zaire, probably dating to around the 13th century AD, and is contemporary with the Iron Age Kisalian tradition. The collective graves were accompanied by rich and varied grave goods including pottery, copper, and iron artifacts, notably an iron gong of a type which serves as a symbol of political authority in central African societies. The presence of sea shells and imported glass beads indicates links with the Indian Ocean coast.