They don't mention Doggerland, a huge piece of land between the UK and Europe that sank into the sea some 8000 years ago. https://en.wikipedia.org/wiki/Doggerland
What I meant is that are there any records of any myths in the countries round the North Sea of lost lands that might actually turn out to have some basis in geological fact.
NB I'm in Scotland and fascinated by ancient history and geology (which are almost the same thing....).
