Ключевые слова: aerial, aerial view, balkan, balkans, bov, bulgaria, bulgarian, canyon, cascade, countryside, defile, drone, environment, europe, fall, forest, gara bov, gorge, hiking, hill, iskar, iskar gorge, landmark, landscape, mountain, nature, panorama, pass, peak, ravine, river, rock, sight, sightseeing, sofia, sofia region, spring, stara planina, stara planina mountain, tourism, touristic, travel, trees, village, water, waterfall, zasele,