Kabir Kuh mountain (Kabir kooh) range is a part of the Zagross Mountain Range. It extends from Mehran to Khoram Abad (Lurestan province). Many rivers originate from this mountain range. Kabir Kuh runs along the Seymareh river, which becomes Karkheh when joins the Kashkan river before reaching the border of Ilam province and Khuzestan province.