Historic Markers Across Tennessee

Big South Tunnel

Marker ID: THC 3B 50
Location: TN 109, Sumner County, at South Tunnel Road
County: Sumner
Waymark: None


On August 12, 1862, 2.7 miles north of here, Confederate General John Hunt Morgan and his raiders, aided by citizens of Gallatin, demolished the Big South Tunnel on the Louisville & Nashville Railroad by crashing a locomotive into a barrier of timbers. The resulting explosion, fires, and collapse of the tunnel cut off United States Army supply lines to Nashville for 98 days.