At the time of Alexander the Great, the mouth of the Euphrates River was located in northern Kuwait. The Euphrates river flowed directly into the Persian Gulf via Khor Subiya which was a river channel at the time. Failaka was located 15 kilometers from the mouth of the Euphrates river. By the first century BC, the Khor Subiya river channel dried out completely.In 127 BC, Kuwait was part of the Parthian Empire and the kingdom of Characene was established around Teredon in present-day Kuwait. Characene was centered in the region encompassing southern Mesopotamia, Characene coins were discovered in Akkaz, Umm an Namil, and Failaka. A busy Parthian commercial station was situated in Kuwait.