 It is referred to in the Spanish historiography as "reino de Labes"; sometimes more commonly referred to by its ruling family, the Mokrani, in Berber "At Muqran" ( "Ouled Moqrane").Its capital was the Kalâa of Ait Abbas, an impregnable citadel in the Biban mountain range.The most serious native revolt against French colonial power in Algeria since the time of Abd al-Qadir broke out in 1871 in the Kabylie and spread through much of Algeria.