Ключевые слова: antonivanovtsi, antonivanovtsy, autumn, balkans, bulgaria, canyon, cascade, dam, devin, engineering, environment, europe, fall, 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,