Ключевые слова: aerial, aerial view, antonivanovtsi, antonivanovtsy, balkans, bulgaria, canyon, cascade, dam, devin, engineering, environment, europe, forest, geological, gorge, hill, hydro, hydroelectricity, krichim, landmark, landscape, meander, mountain, natural, nature, panorama, peninsula, plovdiv region, power, reservoir, resource, rhodope, rhodopes, river, rodopi, scenery, scenics, terrain, tourism, travel, tree, vacha, vacha dam, vacha reservoir, vacha river, view, water, wilderness,