Ключевые слова: acid, bacteria, basin, bear, bison, caldera, ecosystem, elk, features, forest, fumarole, geothermal, geyser, grizzly, hike, hiking, hot, hot spring, hydrothermal, idaho, lake, landmark, montana, mount, mountain, national park, national park service, nature, outdoors, paint pots, park, pine, range, river, spring, subalpine, supervolcano, thermophile, thumb paint pots, tourism, tourist, tree, united states, usa, volcanic, volcano, west thumb, wildlife, wyoming, yellowstone,