L'Anse-aux-Meadows one of the Viking settlements in Newfoundland Canada dated to between 860 and 1060. 500 years before Columbus. They also had other settlements and explored into Nova Scotia, Maine, New England. So yes it was quite possible they could have explored farther south. It seems they never did, or we will never know.
Can't wait to sail my Scots into the gulf of Mexico.
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