Ключевые слова: alpine, architecture, background, beautiful, blue, bridge, colorful, concrete, construction, dam, energy, engineering, environment, forest, green, hiking, hydro, hydroelectric, industry, lake, landscape, mountain, mountains, natural, nature, outdoor, outdoors, panorama, park, peak, reservoir, river, rock, scenery, scenic, sky, technology, tourism, travel, tree, trees, vacation, valley, view, water, wilderness,