Ключевые слова: aerial, aerial view, balkan, balkans, bulgaria, bulgarian, canyon, cascade, countryside, defile, ecology, environment, europe, fall, forest, gorge, hiking, hill, iskar, iskar gorge, lakatnik, lakatnik rocks, landmark, landscape, location, mountain, nature, outdoor, panorama, river, rock, scenic, sight, sightseeing, sky, sofia, sofia region, stara planina, stara planina mountain, terrain, tourism, touristic, trail, travel, trees, trip, vacation, view, village, water,