Ключевые слова: background, beautiful, beauty, blue, boulder, brook, clean, clear, cobblestone, cobblestones, cold, day, drop, ecology, environment, evening, green, industrial, industry, landscape, liquid, metal, mountain, mountain river, natural, nature, outdoor, park, rock, round stones, russia, shallow stream, shallow water, sky, stone, stream, streamlet, summer, surface, technology, tourism, transparent, transparent river, travel, tree, tube, valley, view, water, wild,