another map of europe? i hope you're planning on a different gameplay.
“In the beginning God said, the four-dimensional divergence of an antisymmetric, second rank tensor equals zero, and there was light, and it was good. And on the seventh day he rested.”- Michio Kaku
its a greate idea to make a viking map, but as Natty says its another map of europe, and the title are alresdy used, what you could do is change the title to "Valhalla" what is the nordic mythology country, and a mythology the vikings also belived in.
Valhalla dont have a real size or solid bace, you can form it as you like, try google "valhalla maps" and you get 100 differend bids of what it could look like