I've added a few photo's to the Baddesley Mine profile.
There is a tunnel under the main road which dates from the time when Baddesley common had a number of mines in the area. Trucks were hauled by a chain drive throught the tunnel to a local furnace. The tunnel has been blocked up for years but someone has recently dug down through the roof of the tunnel allowing access. The tunnel is about 2000mts in lenth but only about 1600mts are accessable. I'll add more info later.