KOPET-DAG RANGE

Persian Koppeh Dagh, Turkmen Kpetdag mountain range on the border between Turkmenistan and Iran. It runs northwestsoutheast for more than 400 miles (645 km), from near the Caspian Sea (northwest) to the Harirud (Turkmen: Tejen) River (southeast). Kuh-e Quchan (10,466 feet ), in Iran, is the highest point in the Kopet-Dag proper, although there are higher elevations in the range's outliers in Iran. The important city of Ashgabat, the capital of Turkmenistan, lies in the foothills of the Kopet-Dag.