Alborz Mountain Range Alborz mountain range is a major mountain range in Northern Iran, located south of the Caspian Sea. In Persian it’s called Resht-e Kouh-hayeh Alborz. There are various spellings of these mountains as follows: Elborz, Alburz, Albourz, and Elburz. The length is around 900 km, stretching from Azarbaijan, (“northeast Iran”, close to the