Ключевые слова: background, balkans, blue, borovets, bulgaria, bush, cirque, clouds, dam, destination, environment, europe, forest, grass, green, highest, hiking, hill, lake, landscape, mountain, mountaineering, nature, outdoor, panorama, peak, pernik, recreation, region, river, rock, rocky, route, scenery, ski, sky, slope, sofia, stone, struma, summer, sunny, tourism, trail, travel, vacation, view, vitosha, water,