Above: I’ve tried to show the position of the stones on this old OS map. It’s about 30m from the small pond on the path along Shooter’s Clough.

Walks 7, 8 and 15 all pass this pond. It was once a ventilation shaft for Castedge coal mine, and is clearly marked on the map.

Dennis has emailed to ask whether anyone has any clues about five stones, some of which are crudely carved with what appears to be dates, that he’s discovered on the side of Shooters Clough.

He initially thought they could be burial places, perhaps for a gamekeeper’s favourite dogs. But now wonders whether they could relate to coal mining in the area. One of them has the number 1837 carved into the face. Others show the figures 35 and 36.

Dennis explained: “I came across an old map which indicates the mine ran about 750yds up the clough. I’ve measured using Google Earth the distance from the mine entrance to the stones. It’s approximately 730yds.”

I asked him to describe how to find them: “The best way is to park at Errwood Hall carpark and walk up the slope following the path to the Cat & Fiddle.

“There is a finger post on the right which points to Shooters Clough. Walk down this path. There is a pond on the corner, and just before the pond are two old stone gate stumps.

“Take a sharp left and follow the stone wall up the banking. The stones are about 30 metres from the gate stumps.”

This photo shows where they’re positioned beside the stone wall. They’re normally hidden by the bracken. But are easier to spot at this time of year. If anyone knows what they could mark, please get in touch, or leave a comment below.