Question: Cumberland Gap, Tennessee is surrounded on all sides by a park named after a natural break in what mountains?

full_context: Document 1: Clay County, Tennessee: Clay County is a county located in the U.S. state of Tennessee. As of the 2010 census, the population was 7,861. Its county seat and only incorporated city is Celina. Clay County is named in honor of American statesman Henry Clay, member of the United States Senate from Kentucky and United States Secretary of State in the 19th century. Its current mayor is Dale Reagan.
Document 2: Tri-State Peak: Tri-State Peak is a mountain located in the Cumberland Gap National Historical Park, near the "saddle" of the gap. It gets its name from being on the tri-point of the states of Kentucky, Tennessee, and Virginia.
Document 3: Cumberland Gap Tunnel: The Cumberland Gap Tunnel is a tunnel that carries U.S. Route 25E under Cumberland Gap National Historical Park near the intersection of Kentucky, Tennessee, and Virginia. According to United States Geological Survey maps of the area, the tunnel does not enter Virginia. It is one of only two mountain vehicular tunnels in the United States that cross a state line, the other being the East River Mountain Tunnel on Interstate 77 between Virginia and West Virginia.
Document 4: Rocky Face Fault: The Rocky Face Fault is a geological fault responsible, in part, for the location of Cumberland Gap at Cumberland Mountain and the Narrows gap at Pine Mountain in the southern Appalachian mountain range. The fact that these two gaps lined up enabled western migration across the Appalachians to Kentucky. Included along the fault are the towns of Middlesboro and Pineville, Kentucky. The fault represents a crack in the Cumberland Overthrust Sheet, one of many remnant resistant strata pushed upwards to the northwest over the neighboring Cumberland Plateau. The fault is named after Rocky Face, a prominent, cliff-lined mountain between Middlesboro and Pineville, Kentucky.
Document 5: Justin P. Wilson Cumberland Trail State Park: The Justin P. Wilson Cumberland Trail State Park is a Tennessee hiking trail following a line of ridges and gorges along the eastern escarpment of the Cumberland Plateau in Tennessee. The trail begins at Cumberland Gap National Historical Park and ends at Chickamauga and Chattanooga National Military Park and Prentice Cooper Wildlife Management Area just outside Chattanooga, Tennessee. The trail travels through 11 Tennessee counties and two time zones.
Document 6: Cumberland Gap, Tennessee: Cumberland Gap is a town in Claiborne County, Tennessee, United States. Its population was 494 at the 2010 census. The town is located near the Cumberland Gap, a historic mountain pass for which the town is named, and is surrounded on all sides by the Cumberland Gap National Historical Park. The town is also a part of the park.
Document 7: Clarkrange, Tennessee: Clarkrange is an unincorporated community and census-designated place (CDP) in Fentress County, Tennessee, United States. It is concentrated around the intersection of U.S. Route 127 and Tennessee State Route 62, in Tennessee's western Cumberland Plateau region. The 2010 census reported the population of Clarkrange as 575.
Document 8: Battle of the Cumberland Gap (1863): The September 7–9, 1863 fall of the Cumberland Gap was a victory for Union forces under the command of Ambrose Burnside during his campaign for Knoxville. The bloodless engagement cost the Confederates 2,300 men and control of the Cumberland Gap.
Document 9: Cades Cove: Cades Cove is an isolated valley located in the Tennessee section of the Great Smoky Mountains National Park, USA. The valley was home to numerous settlers before the formation of the national park. Today Cades Cove, the single most popular destination for visitors to the park, attracts more than two million visitors a year because of its well preserved homesteads, scenic mountain views, and abundant display of wildlife. The Cades Cove Historic District is listed on the National Register of Historic Places.
Document 10: Cumberland Gap: The Cumberland Gap is a narrow pass through the long ridge of the Cumberland Mountains, within the Appalachian Mountains, near the junction of the U.S. states of Kentucky, Virginia, and Tennessee.
Document 11: Cagle, Tennessee: Cagle (also known as Cagle Mountain) is an unincorporated community in Sequatchie County, Tennessee, United States. It is concentrated around the intersection of Tennessee State Route 111 and Tennessee State Route 399 atop the Cumberland Plateau in the western part of the county. Its elevation is 2106 ft . The Tennessee Valley Divide passes through the community.
Document 12: Gap Cave: Gap Cave is located just underneath Pinnacle Overlook in the Cumberland Gap National Historical Park, Lee County, Virginia. Currently, the cave has a surveyed length of 18.5 miles and is the 42nd longest cave in the United States and 154th in the world. There are six known entrances: the Gap Cave Entrance (also known as the King Solomons Cave Entrance), an artificial entrance, known as the Cudjo's Cave Entrance, the Stream Entrance, the Soldiers Cave Entrance, the Big Saltpeter Cave Entrance, and the Wellhole. All lead into the same cave, Gap Cave.
Document 13: Cumberland Gap National Historical Park: Established on June 11, 1940, Cumberland Gap National Historical Park is a United States National Historical Park located at the border between Kentucky, Tennessee, and Virginia. The Cumberland Gap is a sizable natural break in the Appalachian Mountains.
Document 14: Harrogate, Tennessee: Harrogate is a city in Claiborne County, Tennessee, United States. It is adjacent to Cumberland Gap National Historical Park.
Document 15: Mountain City, Georgia: Mountain City is an incorporated town in Rabun County, Georgia, United States. The population was 829 at the 2000 census. The town straddles the Eastern Continental Divide in a deep gap in the Blue Ridge Mountain front. The gap allows U.S. Route 441 to cross the range at an elevation of 2168 feet without the significant grade required by roadways at most other mountain passes along the Georgia Blue Ridge.
ground_truth: Appalachian Mountains