Ключевые слова: america, beautiful, calendar, canyon, cascade, cascading, cliff, cold, conifer, current, december, empty, erosion, evergreen, falls, flow, flowing, forest, grand, january, landscape, lower, mountains, national, nature, nobody, north, park, pine, plant, river, rock, rocky, season, seasonal, snow, splash, states, stream, tall, tourism, travel, tree, united, usa, valley, vertical, water, waterfall, west, western, white, wind, winter, wyoming, yellow, yellowstone,