I realize that they probably didn’t have a written history at the time, and everything was probably oral tradition, but is the 11th century really “prehistoric”? I hear “prehistoric”, I think the Flintstones. Well, not quite, but you know what I mean.
These are not *from* the 11th century, they are from 3000 years ago, but were found *under* some 11th c structures.
Here is another early, not prehistoric, since it is early 1500s recent discovery. Near Ontario, it was the biggest settlement in the northern northern hemisphere at that time. I would have sent the Huff Post link that had a lot more info, but found this link at a scientific site and figured it was more PC. ;-)
http://www.livescience.com/21351-mantle-site-artifacts.html