Ключевые слова: active, caldera, crater, eruption, fracture, fumarole, fume, fumy, gas, geophysics, geyser, glacier, heat, hike, ice, kamchatka, lava, magma, mountain, mutnovsky, nature, panorama, people, power, rocks, russia, scenic, sciences, seismic, sky, snow, steam, stones, sulfur, tourism, travel, trekking, volcanic, volcano,