Ключевые слова: adventure, attraction, background, bacteria, basin, blue, brown, clear, colorful, famous, geology, geothermal, geyser, heat, hot, landscape, lava, mineral, national, natural, nature, outdoor, park, pool, preserve, recreation, smell, spectacular, spring, steam, sulfur, temperature, terrace, tourist, travel, vacation, volcanic, water, wyoming, yellow, yellowstone,