The Legacy of a Lost Civilization: Archaeological Discoveries
The map shows the probable extent of land and water at the time of the last glacial maximum, 20,000 yrs BP and when the sea level was probably more than 110m lower than today. (Map of early human migrations according to mitochondrial population genetics (numbers are millennia before present).
Europe during last glacial period: Weichselian glaciation in Scandinavia and Northern Europe. Ice sheets were at their maximum 25,000-13,000 BP. A large part of what is today the North Sea was dry land, Doggerland, connecting Jutland with Britain until about 6,500 or 6,200 BCE.