Cowan Tunnel

The Cowan Tunnel, or Cumberland Mountain Tunnel, is a railroad tunnel near Cowan, Tennessee. The tunnel was built by the Nashville & Chattanooga Railroad Company and was completed in 1852 with the tracks laid in 1853 with a total length of 2,200 ft (670 m). The strategically important tunnel, part of the rail linkage between the Midwestern United States and the Southeastern United States, played a vital role during the American Civil War. It was considered a major engineering feat at the time. It is still operational and owned by CSX Railroad. The tunnel was listed on the National Register of Historic Places in 1977.

Tunnel data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).