The Quitaque Railway Tunnel or Clarity Tunnel is a 582 feet (177 m) abandoned railway tunnel in Floyd County, Texas about 10 miles (16 km) southwest of Quitaque. Construction started in 1927, and the tunnel and associated railway line were completed and opened for use in 1930. The tunnel was listed on the National Register of Historic Places in 1977, and was designated a Texas State Antiquities Landmark in 2003.
