Klyuchevskaya Sopka (; also known as Klyuchevskoi, ) is a stratovolcano, the highest mountain on the Kamchatka Peninsula of Russia and the highest active volcano of Eurasia. It is the highest mountain in Siberia (Asian Russia). Its steep, symmetrical cone towers about from the Bering Sea. The volcano is part of the natural Volcanoes of Kamchatka UNESCO World Heritage Site.