Ключевые слова: background, bansko, biosphere, bulgaria, bush, clean, clouds, dalgoto, destination, environment, europe, frog, frog lake, grass, green, hill, lake, landscape, mountain, mountain lake, mountaineering, nature, outdoor, panorama, peak, pirin, pirin mountain, pirin national park, recreation, reserve, reserves, rock, rocks, route, scenery, stone, summer, sun, sunny, the frog, the frog lake, tourism, trail, travel, unesco world heritage site, vacation, view, water,