My sources M Gast 1972 T moignages nouveaux sur Tin Hinan anc tre l gendaire des Touareg Ahaggar Revue de l Occident musulman et de la M diterran e vol 9 pp 395 400 Unesco general History of Africa Vol II ch 20 quotation Unesco general History of Africa vol III p 125 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