Ключевые слова: adventure, america, attraction, boulders, canyon, carved, deep, discover, evergreen, explore, fast, fir, flow, forest, grand canyon of the yellowstone, green, landscape, large, mountains, natural, nature, outdoor, outside, pine, point, powerful, rapids, rim, river, rock, scenic, tourism, travel, trees, united states, view, visit, volume, water, weather, western, wild, wilderness, yellowstone national park, yellowstone river,