As a result of satellite scanning, a site has been located that may have been a Viking site about 300 miles South of previously found sites.

http://www.msn.com/en-us/news/world/view-from-space-hints-at-a-new-viking-site-in-north-america/ar-BBrcjtM?li=BBnb7Kz

And don't say it's impossible because open boats or lapstrake boats can't cross oceans. They have.