Ключевые слова: aerial, aerial view, background, bansko, biosphere, bulgaria, clean, clouds, destination, drone, environment, europe, frog, frog lake, hiking, hill, lake, landmark, landscape, mountain, mountain lake, mountaineering, nature, outdoor, panorama, peak, pirin, pirin mountain, pirin national park, recreation, reserve, reserves, rock, rocks, route, scenery, sight, sightseeing, stone, summer, sunny, tourism, trail, travel, vacation, view, water,