🇳🇬 Nigeria · Ancient city
Birnin Gazargamu
Late Medieval Kanem–Bornu (1460–1808 CE) · Kanuri (Kanem–Bornu)
Birnin Gazargamu (1460–1808) was Kanem–Bornu Empire capital, 6.5 km earthen walls 5 m high enclosing palace mound, great mosque 100×50 m and 200 compound mounds on Yo/ Kamadugu Yobe. 15th-c.