Visited 29.10.10
There is no longer any scrambling through trees or undergrowth as the approach to this site, and Bryn Beddau close by, have been made easy by a neat stone path through the trees without any loss of ambience (for me this was my first visit, alone and in a very quiet wood, except for the wind in the trees... with an occasional look over my shoulder!).
With clearance of the scrub and trees around Maen Llwyd there are now three other smaller stones visible. How these are associated, or not, with the main stone is not recorded but they add to the general vista. Maen Llwyd is vast but as far as I know its total mass is not known so I cannot guess how far into the earth it extends. It’s right-angled ‘corner’ rises from the ground and resembles a huge cheese wedge.
Could it possibly be a waymarker stone, perhaps one of a series, showing the route to Bryn Beddau or the site that is now Llyn Brenig beyond?
Other stones/cairns may have also been lost to forestry I suspect and may only be returned to us after felling, albeit damaged. As it appears to be the felling time for many FC plantations in this area now who knows? (a good example being the damaged cairn being more visible for the past few years on Nercwys Mtn OS:117-221581)