Ābaskūn or Ābuskūn, or Ābiskūn or Abaskūn, an island or an ancient port on the southeast of the Caspian Sea and northwest of Astarābād at the mouth of the Gurgān river, at 79° 45’ eastern longtitude and 37° 10' northern latitude, as calculated by the classical geographers (Abū al-Fidāʾ, 36; Wuthūq Zamānī, 29, quoting from Kh^wāja Naṣīr al-Dīn al-Ṭūsī). Despite this, its exact location is now unknown. It has been suggested that Ābaskūn was situated on the site of the present-day village of Kh^wāja Nifis or on the Āshūrādih islands; or its whereabouts are connected to the Sokānda …