text: It's http://www.openstreetmap.org/way/126094516#map=15/54.0707/-1.8559 I suspect.  
  
  The imagery south of this note suggests individual small local mineworkings; some have been individually armchaired to the east (see http://www.openstreetmap.org/node/1878079336 ).
  
  The name is certainly not the name but rather a historical description of what used to happen here; whether it's really an archaelogical may also be open to discussion.  The problem with mapping as an archaeological site named "old mine workings" for the renderer is that it makes real archaeological sites with real names harder to find using OSM.  Where I've encountered similar things in the past that clearly aren't mapped correctly I've deleted them; in this case if you don't have the option of surveying locally I'd contact the original mapper and ask them whether they think it really is mapped correctly as is.