Nada Tunnel is a historic 900-foot long tunnel along Kentucky Route 77 in Powell County, Kentucky, in the United States. Formerly a railway tunnel, the tunnel has often been described as the "Gateway to Red River Gorge" for the shortcut it provides motorists to the Red River Gorge canyons of the Daniel Boone National Forest. Built for the Dana Lumber Company between 1910 and 1911, Nada Tunnel was named after Nada, Kentucky, then a logging town about 10 miles past the tunnel's entrance.