Ключевые слова: america, beauty, blue, caldera, eroded, erosion, erupting, eruption, geologic, geothermal, geyser, green, hot, landmark, landscape, mammoth, mineral, mountain, national, natural, nature, park, plant, river, rock, sandstone, sinter, sky, spout, spring, springs, steam, steaming, summer, terrace, terraces, thermal, tourism, travel, travertine, tree, vapor, volcano, water, white, wyoming, yellow, yellowstone,