Hamrin Mountain (Kurdish: Çiyay Hemrîn, Arabic,جبل حمرين)is a mountain range that extend from Diyala Province, 60 km east of Baghdad the capital of Iraq and borders on Iran and extends to the oil-rich city of Kirkuk, 260 km north of Baghdad. The mountain range is the westernmost ripple of the greater Zagros mountains and considered as a natural geographical border of Kurdistan with Arab Iraq. This has been also supported by the Iraqi historian Abdul-Razzak Al-Hassani in his book "The Political history of Iraq". Cecil J. Edmonds also mentioned Hamrin Mountain in his writings.