In ancient Iranian mythology, Tūr or Turaj (Tuzh in Middle Persian) is the son of the emperor Fereydun. According to the account in the Shahnameh the nomadic tribes who inhabited these lands were ruled by Tūr. In that sense, the Turanians could be members of two Iranian peoples both descending from Fereydun, but with different geographical domains and often at war with each other. Turan, therefore, comprised five areas: the Kopet Dag region, the Atrek valley, the eastern Alborz mountains, Helmand valley, Bactria and Margiana.