Except at their northern end, where the Heyran passes at the top of the Āstārāčāy valley does not exceed 1600 m, they are over 2,000 metres (6,600 ft) high...

882 The Astarachay (Talysh: Ostororü, Persian: آستاراچای, Azerbaijani: Astaraçay), is a small river that defines the eastern border between Iran and Azerbaijan...