Church Hill Tunnel is an old Chesapeake and Ohio Railway (C&O) tunnel, built in the early 1870s, which extends approximately 4,000 feet (1,219.2 meters) under the Church Hill district of Richmond, Virginia, United States. On October 2, 1925, the tunnel collapsed on a work train, killing four men and trapping a steam locomotive and ten flat cars. Rescue efforts only resulted in further collapse, and the tunnel was eventually sealed for safety reasons.