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
Stone Mountain Freeway counties. Stone Mountain Freeway begins at an interchange with US 29/SR 8 (Lawrenceville Highway) on the Scottdale–North Decatur city line, within DeKalb County. There is no access to US 29/SR 8 north from Stone Mountain Freeway or to Stone Mountain Freeway from US 29/SR 8 south. Southwest of this interchange, US 29/US 78/SR 8 head toward Decatur. Stone Mountain Freeway travels to the northeast, concurrent with US 78 and SR 410. The concurrency has a partial interchange with Valley Brook Road and North Druid Hills Road. Just before leaving Scottdale is an interchange with Interstate 285 (I-285). Part of this