🇳🇬 Nigeria · Mound
Kursakata Mound (Borno) – Firki Stratigraphy
Iron Age to Historic Kanem · Chad Basin (Gajiganna → Kanem-Bornu)
7 m deep tell preserving 3000-year fishing-pastoralist sequence; fish bones, cord roulette ceramics and copper imports show trans-Saharan contact before Arab records.