[VeniVidiVici]

The map's parchment dates to circa 1434, but scientists say that the underlying yellow-brown ink has a chemical component, anatase, that indicates a 20th-century origin.

So somebody traced over it. Eriksson made it this far. Don't know why a map would be farfetched.

[SunkenCiv]

The map being real or not real isn't that important anyway, because of L'anseaux Meadows.