Ключевые слова: aerial, aerial view, anton, balkan, balkans, bulgaria, canyon, dam, drone, dushantsi, dushantsi reservoir, dushantsy, engineering, environment, europe, forest, gorge, hill, hydro, hydroelectricity, lake, landmark, landscape, meander, mountain, nature, panorama, peninsula, pirdop, power, rapeseed, reservoir, resource, scenery, scenics, sight, sightseeing, sofia region, sredna gora, sredna gora mountain, topolnica, topolnitsa, topolnitza, topolnitza river, tourism, travel, tree, view, water, wilderness,