Ключевые слова: aerial, aerial view, autumn, balkan, balkans, bulgaria, canyon, cascade, countryside, drone, ecology, environment, europe, fall, forest, gorge, hill, landmark, landscape, location, mountain, nature, nisava, nishava, nishava gorge, nishava river, outdoor, panorama, razboishte, river, rock, scenic, sight, sightseeing, sofia, sofia region, stara planina, stara planina mountain, terrain, touristic, trail, travel, trees, trip, vacation, view, village, water,