Ключевые слова: background, bulgaria, cirque, clouds, destination, environment, europe, forest, green, hiking, hill, kupen, kupens peaks, lake, landmark, landscape, malyovitsa, mountain, mountain lake, mountaineering, nature, outdoor, panorama, peak, recreation, rila, rila mountain, rock, rocks, route, scenery, sight, sightseeing, sofia region, stone, strashnoto, strashnoto ezero, strashnoto lake, summer, sunny, the scary, the scary lake, tourism, trail, travel, vacation, water,