Eurasia's highest volcano, Klyuchevskoi, on the Kamchatka Peninsula in Russia's Far East, churned out ash to a height of six kilometers (3.7 miles) on Thursday morning, local Emergencies Ministry's department reported. "The cloud of ash moved in the eastern direction from the volcano," the department said in a statement adding that the cloud of ash posed no danger to residential areas.The statement warned all tourism companies operating in the region against holding tours in the areas located near the volcano, which can also pose threat to aircraft. Klyuchevskoi's most powerful eruption was registered between January and May of 2005. Following that eruption, the volcano "sank" by 50 meters (about 165 feet), from 4,800 meters (about 16,000 feet) to the current 4,750 meters (15,845 feet). Kamchatka lies within the Pacific's volatile 'Ring of Fire.' - Voice of Russia