Ключевые слова: background, beautiful, blue, boiling water, colorful, dangerous, elemental force, eruption, famous, geologic, geothermal, geothermal source water, geyser, groundwater, hot, hydrogen sulfide, island, landmark, landscape, lithosphere, mountains, national, natural, nature, orange, park, pool, power, steam, sulfur, tectonic plates, thermal, tourism, travel, valley, volcanic, volcano, water, wonder, yellowstone,