Ключевые слова: blue, boiling, color image, crater, ecology, electricity, energy, environment, eruption, factory, gas, geology, geothermal, geothermal power station, geyser, green, heat, horizontal, hot, hot spring, iceland, icelandic, industrial, industry, lagoon, landmark, landscape, lava, mountain, natural, nature, pipe, pipeline, plant, pollution, power, renewable, sky, smoke, station, steam, steaming, thermal, travel, travel destinations, vacation, volcanic, volcano, water,