Gök River


The Gök River or Gökırmak is a tributary of the Kızılırmak in Turkey. At the past it was called Amnias.
Its source is in Kastamonu Province.
The Battle of the River Amnias was fought in 89 BC between Mithradates VI of Pontus and Nicomedes IV of Bithynia during the First Mithridatic War.