Ключевые слова: anton ivanov, antonivanovtsi, antonivanovtsy, autumn, balkans, bulgaria, canyon, cascade, dam, devin, engineering, environment, 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,