Visited this evening with ultrix. Only a few shots as the visibility in the tunnel was dreadful, you could'nt see your hand in frount of your face. oh and it was snowing outside, lol.
This railway tunnel was part of the Great Northern Railway. It was on the route that connected Queensbury Station to the City of Bradford. If you are interested in more history of the GNR routes in the area, just Google 'Clayton Railway Tunnel' - there is plenty of info.