Ключевые слова: aerial, aerial view, autumn, balkan, balkans, breze, bulgaria, bulgarian, canyon, countryside, defile, dobravitsa, environment, europe, fall, forest, formation, gorge, hiking, hill, iskar, iskar gorge, landmark, landscape, mountain, nature, outdoor, panorama, ponor, ponor mountain, river, rock, rock formation, rock formation stolo, scenic, sight, sightseeing, sofia, sofia region, stara planina, stara planina mountain, stolo, svoge, tourism, touristic, travel, trees, view, village,