I grew up in the bed of a drained lake (https://en.wikipedia.org/wiki/Chicago_Portage#:~:text=this%2...), so there were no native American artifacts to be found. The best we could do were the foundations of some homes that had been on sanitary district land but then torn down with the area reverting to forest (sadly, this forested area which was open to exploration when I was a kid has since been fenced off).