Iron Gates (Algeria)The Iron Gates are a mountain pass in the Bibans in Algeria. They gave their name to the Biban Range.HistoryAn 1839 French expedition under General Sylvain [Charles Valée|Valée] and the duc d'Orléans disregarded the clauses of the 1837 Treaty of Tafna with emir Abd el-Kader by passing through them, reigniting the war between France and Abd el-Kader's Islamic sovereignty.