Areas subject to settlement and raids by Vikings and Normans:
  eighth century
  ninth century
  tenth century
  eleventh century
  subjected to frequent Viking raids but with little or no Scandinavian settlement

Reused by: 40 more maps that explain the world Jan 13, 2014 Washington Post
Own work. An SVG version of this image. Based on the blank Europe map available on the Commons.
Max Naylor