Ключевые слова: arch, architecture, asia, autumn, baikal, circum, clouds, cloudy, construction, eastern, engineering, fall, fashioned, grass, green, irkutsk, lake, landscape, masonry, mountain, nature, old, orange, pillar, pine, rail, railroad, railway, region, road, rock, russia, siberia, siberian, sky, sleepers, stone, stonework, sunny, track, trans, transcontinental, tree, tunnel,