On my 2012 hike I came across many 5 to 6 foot stacks of rocks I believe a few miles before I got to sarver hollow shelter. My first thought, maybe civil war barriers? When I got to route 621 I asked a fellow, he said there were farms up there my years ago. It just seemed odd, because the mountain top was no more than 100 yards across. Im from flat country, just seems like the rain water would run right off. Do any of you old timers know if this is correct.