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