 Extensive archaeological research, especially since 2009, at sites like Bakr Awa, Tell Begum and Gird-î Qalrakh, has shown that the plain has been continuously occupied since prehistoric times.Sharazor and its king "Yazdan Kard" are mentioned in the Karnamag, a book of Persian mythology, of Ardashir I and also in the inscription of Narseh alongside Garmian.During the Sassanid era the region of Sharazor was one of the 5 provinces of the satrapy of Medes, an ancient Iranian people.