Ключевые слова: attraction, boiling, chromatic pool, cloud, countryside, destination, exterior, famous, fir, firehole, geology, geothermal, geyser, grass, horizontal, hot spot, landmark, landscape, low angle view, national park, naturally, no people, outdoors, photogenic, picturesque, place, river, rock, rugged, rural, scenic, spruce, steam, supervolcano, tourism, travel, tree, united states, upper geyser basin, vegetation, volcanism, volcano, water, wilderness, wyoming, yellowstone,