I just ran across this post and I was wondering if any further information has been found. I currently live in Virginia and have hiked that section (Milam Gap) of the Appalachian Trail many times. I have just recently restarted my family research but this is one of the things I really wanted to find out. I think I have a picture of some signage at the trail head with some info and pictures on it if anyone wants it. There are no identifications but it's still interesting.