Europe during last glacial period: Weichselian glaciation in Scandinavia and Northern Europe. Ice sheets were at their maximum BP. A large part of what is today the North Sea was dry land, Doggerland, connecting Jutland with Britain.
The Vikings eventually settled down in the lands they had conquered. By the Vikings had stopped raiding in Ireland and developed instead as traders and settled in the lands around their towns. The Vikings in England largely became farmers and fisherm