boundary between Kentucky and Tennessee
...that three-foot-tall stone slabs were placed every five miles to mark the boundary between Kentucky and Tennessee?
...that three-foot-tall stone slabs were placed every five miles to mark the <b id="mwBlk"><a href="./Royal_Colonial_Boundary_of_1665" id="mwBlo" rel="mw:WikiLink" title="Royal Colonial Boundary of 1665">boundary between Kentucky and Tennessee</a></b>?