Yes, there is a parking lot at the entrance to the road going up Brasstown Bald. The parking lot is on 180 and the Jack's Knob trail is on the other side of 180. I park there often and have never had a problem. But you will cross the road and the trail marked on the other side of the road. So the trail I'm talking about is entirely on the AT side of 180 (the AT is about 4.5 miles from 180). It is great trail, well maintained but not worn down like the AT.
The campsite is about a mile and 1/2 in from 180. You will have a steep uphill then it levels out and is fairly level to the campsite. Going south, you will cross the only water on this trail. It is dry in summer but I think you’ll found enough water this time a year. The campsite will be on your left just before you get to another big climb. I would urge you to do the rest of the hike to Chattoahoochee Gap maybe after setting it camp. It is a worth seeing the whole Jack’s Knob trail.
There is also camping at Chattahoochee Gap (not good in the gap but better do a few feet down the old forest service road or you can go left on the AT and there is another good campsite about a mile N of AT (but it does not have water).
Have a good hike.
Pastor John
_Pastor John_