Map showing extent of Doggerland, a vast territory in northwest Europe that was above sea level 16,000 years ago, and the territory's diminishing size as ice melted and the North Sea rose. Illustration by Claus Lunau/Science Photo Library.
Via https://sciencemastodon.com/@ebender00/113606996477811407
And that's just the north sea. I'd like to see what the rest of the map looked like in the Mediterranean, the Spanish peninsula and most likely ... the many islands that would have dotted the Atlantic.