🇩🇿 Algeria · Fortress
Gemellae
Roman (Hadrianic–Late Antique, 126–430 CE) · Roman
Gemellae (Mlili) is the pivot of the Fossatum Africae Saharan limes, a Hadrianic legionary vexillation fort 200×190 m with rounded corners and double ditch, guarding the Seguia–Oued Djedi passage.