That kind of stuff is as old as creation. Why do you think the flood was for?
the “flood” was an event written by prior cultures - the hebrew version is literally plagiarized from persian historical accounts
the “flood” has nothing to do with judaism or other parasites
here is a picture of europe before this event: https://images.bigissue.com/2018/02/Hero_Doggerland.jpg
many people wrote about this environmental change
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