In dictionaries:
Kopet Dag
The Köpet Dag, Kopet Dagh, or Koppeh Dagh, also known as the Turkmen-Khorasan Mountain Range,. is a mountain range on the border between Turkmenistan and Iran that extends about along the border southeast of the Caspian Sea, stretching northwest-southeast from near the Caspian Sea in the northwest to the Harirud River in the southeast.
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