Ключевые слова: background, beautiful, beauty, blue, bulgaria, cloud, cloudscape, destination, environment, europe, famous, formation, freedom, freshness, grass, green, high, hill, horizon, idyllic, lake, landmark, landscape, large, mountain, mountaineering, natural, nature, outdoor, panorama, panoramic, park, peaceful, peak, rila, river, rock, scene, seven, sky, spring, stone, tourism, travel, vacations, water,