Russia is also home to the world’s largest active volcano Klyuchevskaya Sopka, which has a height of 4,750 m (15,584 ft). It is cone shaped volcano, that can be climbed from all sides. Mostly, climbs are from the pass between Klyuchevskaja nad Kamen from the south. Less popular is west route. The height of Klyuchevskaja is in the range from 4750 to 4850 m according to different sources. However, on the north side of the summit crater it is 4750 m.During the summer a helmet is necessity due to the falling of stones and rocks. In summer 2003, one Czech turist was hit to death by stone on the slope of Klyuchevskaja, and several members of rescue team were injured. For winter and spring climbs you need crampoons, ice-axe, avalanche transceiver, snow showel, etc. Helmet is recommendable, but not necessary, as majority of stones and rocks area stabilizated by ice and snow.
Difficulties of the climb are mostly near the summit - strong volcanic activity, gases, temperature, etc. During the climb the worst troubles are falling stones and rocks. We set up our camp on the north at the altitude 2070 m, so that, 2700 altitude meters were for summit day. Usually, the advance camp is set up from the north/north-west at 2700-2900 m. From the south the summit day starts from the pass between Klyuchevskaja and Kamen.