My sources M Gast  Tmoignages nouveaux sur Tin Hinan anctre lgendaire des Touareg Ahaggar Revue de lOccident musulman et de la Mditerrane vol  pp  Unesco general History of Africa Vol II ch   quotation Unesco general History of Africa vol III p Excavations in Abalessa brought to light a large quantity ot objects suggesting the existence of an old route between the southern Morocco and the Hoggar from the fourth century of the Christian era t a time when camels were in use