Identification of its ruins were long delayed by errors in its mention in the Tabula Peutingeriana,[8] which placed it "42 miles" west of Rusippisir instead of the actual distance of about 2 miles.[1] Iomnium, not Iol, is also probably the Ioulíou (Greek: Ἰουλίου) mentioned by the Periplus of Pseudo-Scylax, the present text probably representing a scribal error of the original name.[1]