The Kopet Dag, Kopet Dagh, or Koppeh Dagh, also known as the Turkmen-Khorasan Mountain Range is a mountain range on the frontier between Turkmenistan and Iran, extending about 650 km (404 mi) along the border, east of the Caspian Sea. The highest peak of the range in Turkmenistan is southwest of the capital Ashgabat and stands at 2,940 m (9,646 ft). The highest Iranian summit is 3,191 m (10,466 ft).
This mountain range has a ski resort officially open by the former president of Turkmenistan Saparmurat Niyazov. Despite the lack of snow in the Kopet Dag mountains, Niyazov was determined to build a major resort there.