The Khuzestan Plain is the relatively flat region of Iran where the Khuzestan province and the cities of Ahvaz, Susa and Abadan are located. It is the largest plain in Iran and one of the richest agricultural areas in the world. It is irrigated by several big rivers such as Karun and Karkheh . Khuzestan Plain borders Mesopotamia and is separated from it by the Arvandrud River. Khuzestan was the center of the ancient Elamite culture of Iran.
