Ключевые слова: background, boardwalk, brown, caldera, cleopatra, colorful, crystalized, deposition, ecosystem, features, forest, geological, geology, geothermal, geyser, hot, hot spring, hydrothermal, idaho, jupiter, landmark, mammoth, montana, mound, mountain, national park, national park service, nature, outdoors, park, pine, range, salt, spring, steam, supervolcano, terrace, terraces, tourism, tourist, tree, united states, usa, volcanic, volcano, water, wyoming, yellow, yellowstone,