High Quality Content by WIKIPEDIA articles! The Red River Gorge, system on the Red River in east-central Kentucky. Geologically, it is part of the Pottsville Escarpment. Much of the Gorge is located inside the Daniel Boone National Forest and has been subsequently reserved as the Red River Gorge Geological Area, an area of around 44 square miles (110 km2). It has been designated a National Natural Landmark. The 20 square miles (52 km2) Clifty Wilderness Area lies entirely within the gorge.