Every body in the Megalith club knows about Gors Fawr. If you go down to the end of that penninsula in Wales, somewhere by the Preselis is Gors Fawr circle. I only came across the existance of the circle known as Dyffryn while compiling all the known sites of stone circles for the Megalith Map. I was back in the UK for a while in spring '98 so I wanted to see the circle that I had been so close to on previous visits but never knew was there.
Above is a picture taken from inside the circle looking north(ish) towards Rosebush Reservoir.