I thought I would cut through the forest to find these stones which was not a good idea. I was relieved to have my GPS in the rucksac which let me find the site and get back to the car via the path I should have followed in the first place. Caught a glimpse of a wild-cat too. Good views from the rocky knoll above the forest clearing which houses the stones.
Sorry , you wouldn't have seen a wild cat- they are not present on the island; it was more likely a domestic cat gone feral.