Ключевые слова: acid, america, back basin, between, boiling, boiling mud, clouds, corrosion, danger, erosion, geology, geysers, hot springs, landscape, limestone, limestone formations, lunar landscape, mud, mud pools, natures, norris, orange, panorama, park, sky, spa, steam, sulfur, summer, sun, tourism, toxic, travel, trees, united states, vegetation, water, wonderful, wyoming, yellowstone, yellowstone national park,