Secrets Unlocked: Series 1_Part 27: A Viking Map

According to many experts, the Vinland map was created 50 years before Christopher Columbus sailed west, but amazingly, it features the coast of North America. If it's authentic, it will rewrite history as we know it. Join the investigation as our experts look for clues in the fabric of the map. They'll test a theory that the document is based on Viking maps created centuries before Columbus was born, and they'll name a 1930s scholar who some claim faked the whole thing. Finally, we reveal the true story, thanks to a stunning 2018 discovery.