Stephen Foster State Park

I forget what counties hold the park. You take 84 S. from Hinesville, Liberty County, going for many miles till you get to the junction with 441, then turn left and go for a number of miles till you see the sign, then turn left again. It’s contained within the Okefenokee National Park.

http://gastateparks.org/georgia/parks/list.asp?regionid=133&siteid=5

Some interesting place names to the north of there: Skullhead and Fort Mudge, where the Okefenokee Pkwy meets State Road 42.