https://voonze.com/when-the-thames-and-the-seine-flowed-into-the-rhine-there-is-another-europe-under-the-sea-and-not-long-ago-there-were-humans-living-there/
8,000 years ago, what we now call the North Sea was an almost endless series of calm and relatively fertile plains. That land connected the British Isles with present-day Denmark, the Netherlands, and part of Atlantic France. It was more than a land bridge; i…
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