Ключевые слова: alpine, alps, beautiful, blue, cloud, clouds, destination, environment, europe, european, flag, forest, grass, green, high, horizon, lake, landscape, lucerne, luzern, mount, mountain, mountains, nature, other keywords, outdoor, panorama, panoramic, peak, pilatus, red, rigi, rock, scene, scenery, scenic, schweiz, sky, snow, summer, summit, swiss, swiss flag, switzerland, top, tourism, tranquil, travel, tree, vacation, view, water, winter,