Came across this a couple of weeks back whilst exploring Big moor / Swine Sty.
It looks good to me and a couple of others agree but i'm surprised if it is "genuine" it's not been recorded.
Stu pointed out the whole area has been surveyed.
I don't know whether to submit this for inclusion here or not.
http://i33.tinypic.com/2hi2w3s.jpg
http://i34.tinypic.com/2mmv4ub.jpg
Showing it's context, "cup stone" at left of centre.
