Ключевые слова: adventure, america, attraction, background, bacteria, bacterial, blue, clouds, colorful, colorful land known, concept, daytime, forest, geology, geothermal, geyser, giant, glory, green, heat, holiday, horizontal, hot, landscape, magnificient, mineral, morning, mysterious, mystery, national, natural, nature, nobody, old, outback, outdoors, park, pool, postcard, serene, sky, smell, spectacular, sulfur, superb, temperature, terrace, tranquility, travel, vacation, vacations, view, volcanic, water, weekend, wyoming, yellow, yellowstone,