Ключевые слова: aerial, aerial view, background, biosphere, bulgaria, clean, destination, drone, environment, europe, gotse delchev, hill, lake, landmark, landscape, mountain, mountain lake, mountaineering, nature, oreliak, orelyak, orelyak peak, panorama, papaz chair, peak, pirin, pirin mountain, pirin national park, popovi livadi, recreation, reserve, reserves, rock, rocks, route, sandanski, scenery, sight, sightseeing, summer, sunny, tourism, trail, travel, vacation, water, winter,