Thanks to James Gage for this link
If you feel like reading about how archeologists confuse assumptions with conclusions, this article will serve as a good example. Note for example the assumption: if it is 18th century then it is not Indian.
Why cannot these "experts" get it through their thick skulls that Indians still exists today - yes in the 21st century! How amazing is that? I guess it is hard even for me to grasp this but it needs to be repeated over and over: Indians are still around now.