text: Hi Fab3052,
  
  Can I suggest tags (used at other local pit sites) so you can add this detail detail yourself?
  disused=yes
  headframe=no
  man_made=mineshaft
  name=Killingworth Colliery Shaft
  
  Can I suggest the above tagging is more specific than the 'historic=monument' you recently added?
  https://wiki.openstreetmap.org/wiki/Tag:historic%3Dmonument
  https://wiki.openstreetmap.org/wiki/Tag:man_made%3Dmineshaft
  
  I'd also suggest you check the location, as it looks 50m too bar west in a ploughed field, rather than a landscaped park with a winding wheel next to the car park, and a stone standing monument on made-up ground.
  
  Happy mapping!