Ключевые слова: ancient, antique, antiquities, arc, arch, arch bridge, boulder, bridge, bulgaria, bulgarian culture, byala, byala most, clouds, colors, eastern europe, environment, environmental conservation, flowing water, footbridge, grass, green, horizontal, kolyu ficheto, leaf, no people, old, old fashioned, outdoors, river, rock, running water, scenics, sky, smooth, stone, stream, summer, tree, water, yantra river,