Ключевые слова: america, beautiful, blue, caldera, clouds, colorful, erupting, eruption, extremophile, faithful, famous, forest, geology, geothermal, geyser, hot, landscape, meadow, national, natural, nature, old, outdoor, park, pond, pool, reflection, river, scenery, scenic, sightseeing, sky, spring, steam, thermal, thermophilic, tranquil, travel, unique, vacation, volcanic, volcano, water, wilderness, wildlife, wonder, wyoming, yellowstone,