Growing up as a kid, we used to find old wagon wheels and arrow heads frequently. There used to be an old fort not far from where my parent's house was located. A limestone creek ran on the back part of their property and defined the property line. We'd find all sorts of artifacts up and down this creek. I even came across a rock with an circular hole that was obviously bored into it and charring around the hole. I used to have some interesting show-n-tells. This was in the 80s.