The picture I have seen is on a slide - I could ask for a copy it's quite a nice shot.

The slide had "FAL MOR" hand written across the top and he told me it was on "Blackside Bay" (though it was noisy and I couldn't quite hear what he was saying) - where the Spanish Armada landed in "County Mao" and apparently sank, anywayz..

After a few dead ends I came up with the picture that you'd found and realised it was the same place, the pyramid shaped stone a prominent clue. We also drew a pretty rough sketch/map which I then crosschecked with the TMA - Map Browser.

He said he maybe able to get a grid ref: I'll give him a prod tomorrow.

Hope this is of help -

-broen-