Ключевые слова: aerial, aerial view, autumn, balkans, bulgaria, countryside, dam, drone, engineering, environment, europe, fall, fish, forest, hill, hydro, hydroelectricity, lake, land, landmark, landscape, mountain, nature, panorama, pasture, peninsula, plovdiv region, power, pyasachnik, pyasachnik dam, pyasachnik reservoir, reservoir, resource, river, rural, sandstone, scenics, sight, sightseeing, sredna gora, sredna gora mountain, thrac, thracian plain, tourism, travel, tree, upper thracian plain, view, water, wilderness,