Ключевые слова: activity, america, american, background, bacteria, bright, feature, features, geological, geology, geothermal, grand, hot, land, mineral, montana, national, natural, nature, orange, park, pattern, prismatic, red, ripple, ripples, scenery, scenic, spring, stripe, stripes, surface, texture, textured, thermal, us, usa, vertical, vibrant, volcanic, volcano, waves, wyoming, yellowstone,