Ключевые слова: area, blue, boil, bubble, colorful, crater, dangerous, desert, discover, dramatic, energy, europe, fumarole, fumaroles, gas, geology, geothermal, hole, hot, hverir, iceland, icelandic, krafla, lake, landscape, mineral, mountain, mud, mudpots, myvatn, namafjall, namaskard, nature, north, smell, smoke, spring, steam, steaming, sulfur, thermal, tourism, travel, volcanic, volcano, zolfo,