Witch's Grave

I'm pretty certain that the rectangular stone slab in the forefront of this picture is the stone referred to in this BBC story
https://www.bbc.co.uk/news/uk-scotland-29689688

If it is, then it's the only known grave of a 'witch', of its type, in Scotland. 
Of course, she wasn't a witch; just a poor old lady who was different and an easy scapegoat for all sorts of things in those troubled times of the 17th and 18th centuries. There's talk of a memorial going up in that area, a monument to the terrible slaughter of innocent women that went on across the country 300 or so years ago.