Ключевые слова: bacteria, basin, caldera, castle, castle geyser, cone, cone geyser, eruption, famous, features, flowing, geology, geothermal, geyser, hot, landmark, landscape, microbe, microorganisms, mud, national, orange, park, pigmented, pool, scenic, states, steam, thermal, thermophiles, thermophilic, tourism, tourist attraction, travel, united, united states, upper, upper geyser basin, volcano, water, wyoming, yellow, yellowstone,