It was an amazing place, absurdly windy. It took me about 4 hours to get to the top, the first 3 hours 45 of which were in cloud, then thick, wet fog with zero visibility. I very nearly turned back. The cloud lifted just as I got to the top, which was quite something.
I really enjoyed visiting it, despite the poor state of the stones. The panorama is quite something. Nice hills, these, and new to me. I would have liked to stop longer than the half an hour I could spare, but it was a long old walk from Boughrood to Builth, with an unmissable bus to catch at the end!
Yeah, it's all too easy to forget how mysterious these great erratics must have appeared to people with no knowledge of glaciation... so, if it couldn't have fallen from a crag above, the only logical conclusion at the time must've been it was placed there by giants, right? No wonder these places got called out in lore and recorded.
Interesting stone, as kids we used to cycle along these lanes on our way to Llyn Alaw (for some reason considered a novelty at the time and we were told to keep away so naturally went). I do not remember the stone or anyone talking about it, however, as kids we thought all the standing stones had been put there for the cows to scratch their backs so wouldn't have shown any interest. Wish you hadn't posted, feel a need to go there now!
This brings back memories. If I remember right the circle stones were all eroding rapidly, due to their laminations splitting. It was quite difficult to find most of them because they had already disappeared down to ground level.
To clarify the lack of understanding here: the stone is clearly annotated - as 'Stone' - upon the OS 1900s 1:10 map and is clearly named upon both the current 1:50k and 1:25k OS mapping. Therefore, it is reasonably well known - and obviously, several cartographers have felt it was significant enough to record and thus highlight as worthy of note - presumably following discussion with your predecessors? It is therefore regrettable that whatever knowledge was once held in the locale would now appear to have been lost; however, that is why benefactors such as Julian Cope finance online communities such as The Modern Antiquarian... to ensure memory is preserved. Incidentally, in my experience it is not uncommon for locals to have little awareness of what they possess.
Note that it is suggested by RCAHMW (John Wiles 31.08.07) that the origin of the local name Carreglefn is influenced by the erratic, which appears to me logical enough. Again, it is presumed that those recording this data gained it locally.
Re.: Maen y Goges.
With all respect, I doubt if it gave its name to the parish as there are no similarly named parishes in the locality:
they include Bodewryd, Llanbadrig, Llanfechell, Llanfflewin and Llanbabo.
I also doubt if most of the local people know about Maen y Goges. I say this as having lived for many years in the area. It was never mentioned to us at primary or secondary school (their history was just the kings and queens of England!) and as children we never played on the site. Having also known two people who were brought up almost on site in Rhyd y Felin (Mill Ford) and Nant y Felin (Mill Stream), one of whom was my godfather and neighbour for many years, but they never mentioned Maen y Goges. I know of only one person who mentioned said stone to me in 75 years.
It's good to see Maen y Goges mentioned and sorry if I'm upsetting anyone. But it doesn't have any real historical connections as it's just a big erratic glacial boulder. But I still like to visit it.
We sought permission but there was no-one in at the house. On our way back the farmer was there in his tractor. We told him what we were at and he was sound. There's another one in that townland that we scouted but decided to leave for another day.