The red line is the Latitude 36° 30" line NC/Va border extended west by the Donaldson Survey. The Yellow line is the western Virginia border established by the Lochaber Treaty. That line extends northerly to the mouth of the Kanawa River at Point Pleasant on the Ohio River. The point of intersection in the middle of the Holston River is 6 miles upstream from the Long Island of the Holston. It is the corner of both the Path Grant and the Watauga Purchases of March 1775.