PAROPAMISUS, the name given by the Greeks to the parts of the Hindu Kush bordering Kohistan to the north-west of Kabul. It is now applied in a restricted sense to the water-parting between Herat and the Russian frontier on the Kushk river, which possesses no local name of its own. From Herat city to the crest of the Paropamisus, which is crossed by several easy passes, is a distance of about 36 m., involving a rise of 1000 ft.