Great campsite $15/night. About 1/3 reservation and 2/3 first come first served. It is a site that attracts hikers especially, as it is adjacent to the Appalachian trail. Bear boxes are at each site too, which is very convenient especially at a walk in site!
If you can, get site #20. It is the BEST sunset watching spot. You can also watch from the Appalachian trail below that site.
Showers are coin operated, $1.75 and nicely renovated. Laundry is available too. Poor cell service in most sites, best reception is at the amphitheater.