Потоп 18-19 века. Изменение ландшафта, смотрим карты.
карта 1821, на этом сайте есть вся Россия, кому интересно посмотрите сами.
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![[strm] Алексей Корягин](https://sun9-21.userapi.com/LJPCP2L-uAKVYpCq4rbWNTAavNLpjzNPPUF3-Q/XKNuNZxT0SM.jpg)
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