Ключевые слова: active volcano, america, basin, beautiful, blue, buzzer, caldera, case, dramatic, ecosystem, environment, erupting, eruption, exciting, first national park, fog, forest, geologic, geothermal, geyser, gold, habitat, horizontal, hot, idaho, jim bridger, landscape, montana, national, nature, outdoor, park, river, riverside, scenic, september, steam, thermal, tourism, travel, tree, upper, volcano, water, west, western, wild, wilderness, wyoming, yellowstone,