Ключевые слова: beautiful, blue, boil, cloud, clouds, cloudy, erupt, erupting, eruption, faithful, famous, geology, geothermal, geyser, heat, hot, hydrothermal, landmark, landscape, mist, national, natural, nature, outdoor, park, spectacular, splash, spray, spring, steam, sunrise, sunset, thermal, travel, vapor, volcanic, volcano, water, wyoming, yellowstone,