Ключевые слова: american, animal, birth, bison, buffalo, caldera, calf, dakota, destination, eruption, famous, forest, geyser, geysers, hazards, heat, indians, land, mammal, national, native, natively, nature, nutritions, park, plains, plateau, preserve, region, smoke, soil, steam, tatanka, toxic, travel, traveling, trip, usa, volcanic, volcano, water, wild, wildlife, wyoming, yellowstone,