The area that you have marked with the red circle on the map was the first location that a friend and I detected several years ago. The results were posted previously. We did a tight grid pattern of the field and found no evidence of Fort Franklin being in that field. We spread out and searched the fields within that triangle with no success. Either the fort is located somewhere else within the area or there was very little lost back then. The relics may also be out reach with modern day detectors. Coop