The fact that Vikings and Iroquois had long houses always left questions in my mind about a pre-Columbian settlement here. The St. Lawrence would appear to have been one of their routes had they ventured up river. Hmmmmm ?
To further complicate the research, pre-Columbian tribes of the Pacific NW also built and lived in long houses.
Reckon the Viking made it all the way to the Pacific or were the long houses a N. American invention.?
http://www.absoluteastronomy.com/topics/Native_American_long_house