Ключевые слова: america, autumn, beautiful, beauty, cascade, color, creek, deciduous, environment, fall, flowing, forest, gorge, green, land, landscape, leaves, middle, motion, motion blur, nature, north, northwest, oregon, outdoors, pacific, park, plant, portland, rock, scenery, scenic, silver, silver falls, state, stone, stream, travel, tree, united, upper ponytail falls, usa, water, waterfall,