Ключевые слова: aerial, aerial view, balkan, balkans, bulgaria, bulgarian, canyon, countryside, defile, drone, environment, europe, forest, formations, gorge, hiking, hill, iskar, iskar gorge, iskar river gorge, landmark, landscape, location, lyutibrod, mountain, nature, outdoor, panorama, river, rock, scenic, sight, sightseeing, sky, stara planina, stara planina mountain, terrain, tourism, touristic, travel, trees, village, vratsa, vratsa region, water,