volcanoes of kamchatka peninsula: kamen and klyuchevskoy

kamchatka klyuchevskoy klyuchevskaya klyuchevskoi sopka kamen landscape volcanic volcanism volcano volcanology lava magma massive mountain nature active caldera cliff cloud cone crater earthquake ecology ecosystem ecotourism environment eruption expedition extreme fog fumarole geography geology glacier height highlands hiking ice outdoor peak recreation relief rock russia sky smoke snow tourism travel valley weather far east russian peninsula