A dancing scene from the Tassili art                    A hunting scene of a deer             

The stone age societies were characterized  with their social, economic life totally linked to the environment development of the  region. Climate change, haunting, and food-gathering are the traits of primitive societies.  Migratory life is not an exclusive feature to the hunters of the stone age but a general life feature existing in all regions, with geographical conditions urging the inhabitant to hunt fish and gather food. The need for food is always the principal motive that prevents hunters from enjoying a stable life. A  life that only gets easy when there is an abundance in hunting, it appears clearly on the north western coast of North America where salmon is in abundance, however  this abundance is seasonal and this urges the hunters and fishermen to follow others  and move to look for food elsewhere .