Ключевые слова: america, basin, blue, caldera, destination, erupt, erupting, eruption, faithful, famous, geology, geothermal, geyser, heat, hot, landmark, landscape, national, natural, nature, old, outdoor, park, power, recreation, sky, spring, steam, summer, thermal, tourism, tourist, travel, usa, vacation, volcanic, volcano, water, wilderness, wyoming, yellowstone,