Ключевые слова: america, beautiful, beauty, caldera, canyon, colorful background, destination, environment, falls, forest, fresh air, geothermal, grand, grand canyon of the yellowstone, green, landscape, lower falls, mist, mountain, mountain river, mountains, national, national park, natural, natural background, nature, outdoor, outdoors, outside, park, peaceful landscape, river, rock, spring, stream, summer, supervolcano, tourism, travel, trees, trip, united states, usa, vacation, water, waterfall, weather, wyoming, yellowstone, yellowstone national park,