The Tendürek Dâgi is a shield volcano in the Turkish province of Ağrı in the district Diyadin near the Iranian border. He is with 3533 m one of the highest mountains in the country . The ridge runs in an east -west direction. The Tendürek has two cones and a crater lake on the eastern slope with 500 m diameter and is Turkey 's most active volcano . Its last eruption of gas and ash was carried out in 1855. The outbreaks and the emergence of the volcano left broad lava flows , now covering 500 km ². At the eastern flank comes from the mountain water vapor and sulfur fumes , which the environment of the crater has turned yellow . The temperature of the vapor is 60 ° C. At the foot of the mountain , the river Bendimahi springs .(Wikipedia) Tendürek DâgiLocation: 39.37° N, 44.87° EElevation: 3.584 mHOME21. May 2010