Ключевые слова: acid, america, boiling, clouds, corrosion, danger, erosion, firehole, firehole canyon drive, firehole river, geology, geysers, grand prismatic spring, hot springs, landscape, limestone, limestone formations, natures, orange, panorama, park, river, sky, spa, steam, sulfur, summer, sun, tourism, toxic, travel, trees, united states, vegetation, water, wonderful, wyoming, yellowstone, yellowstone national park,