Erzurum (Karin; , Theodosiopolis) is a city in eastern Anatolia, Turkey. The name 'Erzurum' derives from 'Arz-e Rûm' (literally The Land of the Romans in Persian). To the Arabs, the city was known as Ḳālīḳalā (adopted from the Armenian name Karno K'aghak').Inalcik, Halil. 'Erzurum' (...) (from Wikipedia)