Ключевые слова: america, basin, beautiful, black, black pool, destination, environment, geological, geology, geothermal, geyser, hot, hydrology, landscape, national, natural, nature, outdoors, park, pond, pool, scene, scenery, scenic, spring, steam, terrain, thermal, thumb, travel, united states, usa, vapor, view, water, west, west thumb geyser basin, wild, wilderness, wyoming, yellowstone, yellowstone national park,