A Bridge To The Future Traditional Cache

Deep in the hills of Darwen is a true engineering delight as the entrance to the south tunnel that cuts its way through to greater Manchester, I thought of one of my favorite films and it might be fun to incorporate the bridge that onlooks the sough tunnel with a machine that doesn't need roads, great Scott I've said to much... 

Make your way from cranberry lane towards tunnel st, the railway line end, and head for a path that will take you to the bridge that onlooks sough tunnel, now at the end of the bridge hidden behind a tree maybe? Hmm, the tree might be marked with a certain wacky doctors initials and a certain year, that involved being shot in the back for a matter of eighty dollars, you're getting it... A micro screwdriver will be required...