The westernmost ripple of the greater Zagros mountains, the Hamrin mountains extend from the Diyala Governorate bordering Iran, northwest to the Tigris river, crossing northern Saladin Governorate and southern Kirkuk Governorate.
The westernmost crest of the larger Zagros mountain range, the Hamrin mountains stretch from the Diyala Governorate bordering Iran, northwest to the Tigris River, traversing northern Saladin Governorate and southern Kirkuk Governorate.