H. G. Wells referred to the concept in his short story A Story of the Stone Age of 1897, set in “a time when one might have walked dryshod from France (as we call it now) to England, and when a broad and sluggish Thames flowed through its marshes to meet its father Rhine, flowing through a wide and level country that is under water in these latter days, and which we know by the name of the North Sea…Fifty thousand years ago it was, fifty thousand years if the reckoning of geologists is correct”…
Source: Doggerland – Wikipedia
Tim B.
“The story is set during the Stone Age, and tells of a caveman named Ugh-lomi, who bonds with the young woman Eudena and kills his rival, the de facto tribal leader Uya. Whilst in exile, Ugh-lomi becomes the first man to ride a horse, and to combine stone and wood to fashion an axe. He uses this weapon, along with his wits, to survive encounters with cave bears, hyenas and rhinos, and ultimately claim the position of tribal leader for himself. ”
https://en.wikipedia.org/wiki/A_Story_of_the_Stone_Age
Tim B.
https://en.wikipedia.org/wiki/Maglemosian_culture
“When the Maglemosian culture flourished, sea levels were much lower than now and what is now mainland Europe and Scandinavia were linked with Britain. The cultural period overlaps the end of the last ice age,[2] when the ice retreated and the glaciers melted. It was a long process and sea levels in Northern Europe did not reach current levels until almost 6000 BC, by which time they had inundated large territories previously inhabited by Maglemosian people. Therefore, there is hope that the emerging discipline of underwater archaeology may reveal interesting finds related to the Maglemosian culture in the future. “