Our daughter Jana found this Indian tool on my Mom's farm in northwestern North Dakota. It is 7 1/2 inches long and weighs almost 3 1/2 pounds. I've called it a hammer rock, but technically I think it's a battle hammer. It was designed to be used as a weapon or a tool. The blunt end could grind dried corn, crush shells or chop wood. The pointed end broke up hard dirt or cut through roots when gardening. The Indian tribes in our area were peaceful nations, so I'm envisioning