Kliuchevskoi volcano, which is also known under another name, Kluchevskaya Sopka, is situated in Russia, at Kamchatka Peninsula. Its height is about 4,850 meters, and age is more than 7,000 years. Volcano structure is quite complex, it has an almost perfect conical shape and more than 70 minor cones and craters. Active observance of the volcano has being carried for the last 300 years; about 50 major eruptions have been recorded during that time.
One of the most violent eruptions occurred in 2004, it literally was a record for the whole time of observation; ash stem height was 8,000 meters. After the eruption of 2013, the height of the volcano has increased by about 150 meters. For many years Kluchevskaya Sopka attracted attention of researchers around the world.
Each subsequent volcanic eruption leads to the formation of new side craters; the largest among them have unique names. In total there are more than 30 side craters, their number and location changes after each active phase. According to statistics, major volcanic eruptions occur every 5-6 years. There are several large settlements in the immediate vicinity of the volcano, and there is one of the largest Russian research stations in the Klyuchi foothills. Observation of the volcano is a continuous process; scientists are trying to predict the date of its next eruption as accurately as possible.
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