Past and Present Algeria: The Tantalizing Past of the Tassili n’Ajjer, the Ruins of Rome’s Breadbasket, and Contemporary Experiences in Algeria. Margaret Berrier recently returned from exploring rock art of Tassili n’Ajjer (Rock Art of the Plateau of the Rivers) in southeastern Algeria.  It is unique because of its isolation and its evidence of climate change which will be demonstrated by looking at the imagery from the early Neolithic through the complete desertification that exists today.  Margaret will also have us visit the Roman ruins of Timgad, Djemila and Timpasa.