Ключевые слова: activity, awaken, background, bank, beautiful, caldera, cloud, danger, erupt, eruption, explode, explosion, field, fog, gas, geology, geothermal, geyser, green, heat, hot, hotspring, kamchatka, landscape, lava, minerals, national, nature, park, reserve, river, rock, russia, smoke, source, spring, steam, stone, summer, thermal, tourism, travel, trekking, uzon, valley, vent, volcano, water, world, yellowstone,