Clay Cross Station was built by the North Midland Railway in 1840,it was originally going to be built within the clay cross tunnel but it was
clear that it could not be ventilated effectivly so instead it was built at the northern entrance at Tupton which was 2 miles from the center of Clay Cross
  It was eventually closed in 1967 .There is talk of a new station for Clay Cross being built but that as not come about yet

The  tunnel is 1,760 yards long, 22 feet wide, and 26 high. The expense of constructing this tunnel is said to have been £100 per yard, or £176,000.

                click on the link for a detailed essay on the tunnel by Cliff Williams  in a "PDF" file

                                           Clay X  Tunnel