Ключевые слова: america, area, beautiful, beauty, blue, boiling, cave, dragon, eerie, eruption, force, geologic, geology, geothermal, geyser, heat, holiday, hot, landscape, mineral, mountain, mouth, mud, national, natural, nature, outdoor, park, pool, portrait, rock, scary, scene, scenic, sightseeing, sky, special, spring, steam, thermal, tourism, tree, unique, vertical, volcanic, volcano, water, wonder, wyoming, yellowstone,