Did the Vikings Stay? Vatican Files May Offer Clues
The Kensington Runestone; verified as proof of Scandinavians in Minnesota in 1362
Apparently the Egyptians made their way here well before the Vikes.
There's also a cave close to me here in Illinois that had 20,000 articles in it from India dated at 3000 B.C., I think it's 3000 B.C. anyway. Burrows cave. If it was a hoax, would a hoaxer carve ancient writing on 20,000 rocks?! :^)