Black Rock Mountain State Park Black Rock Mountain State Park Black Rock Mountain State Park is a Georgia state park west of Mountain City in Rabun County, Georgia, in Georgia's Blue Ridge Mountains. It is named after its sheer cliffs of dark-colored biotite gneiss. Astride the Eastern Continental Divide at an elevation of , the park provides many scenic overlooks and vistas of the southern Appalachian Mountains. On a clear day, four states are visible: Georgia, North Carolina, South Carolina, and Tennessee. In addition to Black Rock Mountain itself, the park includes four other peaks over in elevation, making it the highest state park in
Standing Stone State Park of hiking trails are maintained in the park and forest. The most popular trail is the Lake Trail, which descends from the visitor center to Standing Stone Dam and parallels most of the north shore of the lake before reascending to the cabin area. The most substantial trail is the Cooper Mountain Loop Trail, which circles through several miles of the state forest on the slopes of Cooper Mountain before reentering the state park near Overton Lodge. The National Rolley Hole Marbles Championship is held every September at Standing Stone State Park. Rolley hole is a type of marbles game