text: Hi anon,
  You could add this parking area to the map yourself (like the one at Doctor's Gate is).  It'd also be useful to record which of these are public footpaths as well - these will show in red at https://map.atownsend.org.uk/maps/map/map.html#zoom=15&lat=53.43424&lon=-1.85888 .  Just ask if you're unsure how to do this.
  Best Regards,
  Andy