Wow-eeee!!! Your photos do look suspiciously similar to the shape of the stones in the Ling Roth photo. I'll have to make a journey up there next week.
< Incidentally whilst up here I took a look at the nearby Sutcliffe’s Rough stones, two of which are over the fence in Pisser Rough, should these two get their own site – The Piss Stones perhaps? >
I like it! I'd stick to calling 'em the Sutcliffe Rough Stones misself, but if you wanna include a new site entry for the stray ones, I think you should have the honour of naming them.