Ключевые слова: active, america, attraction, bacteria, basin, beauty, blue, boiling, caldera, destination, ecosystem, emerald, erupting, eruption, famous, formation, fountain, geothermal, geyser, green, heat, hot, lake, mineral, national, national park, natural, orange, pool, power, pressure, rainbow, rock, sapphire, scenic, sky, spring, states, steam, strong, thermal, travel, united, usa, volcanic, volcano, water, wyoming, yellow, yellowstone,