According to Farley, Vikings could have easily travelled south from Newfoundland along North America's eastern seaboard, then swung around the tip of Florida to the Gulf of Mexico where they could enter the Mississippi River, which flowed into to the Arkansas River, which in turn led into the Poteau River in Oklahoma.
"The Poteau River is just a few miles from here," said Garcia. "Don't think about how the waterways look now. Before all [the] man-made lakes and dams, these little creeks were big rivers and waterways back then."