Ключевые слова: acid, america, bacteria, blue, boiling, clouds, color, corrosion, danger, erosion, geology, geysers, grand prismatic spring, green, hot springs, landscape, limestone, limestone formations, mountain, natures, orange, overview, panorama, park, prairie, river, sky, spa, steam, sulfur, summer, sun, tourism, toxic, travel, trees, united states, vegetation, water, wyoming, yellow, yellowstone, yellowstone national park,