Sandsend Tunnel was a tunnel on the Whitby, Redcar and Middlesbrough Union Railway. The rail line that runs through it was originally intended to travel along the top of the cliffs,[1][2] however some of the cliff fell into the sea whilst construction was suspended so the NER constructed two tunnels - the Sandsend tunnel and the Kettleness tunnel.
The Sandsend Tunnel is the longer of two tunnels being 1,652 yards in length. It is predominantly straight but the last 300 yards incorporate a curve to the north.
There are a total of 5 Air Shafts 2 of which have service galleries leading off to the cliffs which were used to dump spoil while carving out the tunnels. The southern half of the tunnel is considerably damp with the tunnel being flooded to about 6 inches on the southern 300 yards.