Blackjack Mountain is a scenic landmark, located in the very southwest corner of Carroll County, Georgia on the Georgia-Alabama border and Heard County line. The nearest city is Ephesus, Georgia, 2.2 miles (3.5 km) to the south. While not an impressive mountain the summit is one of the higher points in Georgia south of Interstate 20. Blackjack Mountain is a long north-south trending ridge. The Native Americans used this promontory as a reference point on their East-West trading path and are believed to have used the summit for sacred ceremonies.