Eyup mateys!

I was wondering if anyone had any info about a stone near Burnsall? It's not marked on the O.S. map, but it sits by a junction of three roads, near Hartlington.

It's a big lump of limestone (I think) with the word 'Hebden' carved into it, though the word looks fairly recent.

Here's a pic: http://img.photobucket.com/albums/v480/Gyrtrash/BurnsallStone.jpg

Boundary stone? Way-marker?

Cheers
Dave