With a relatively low turn out (half a dozen of us) and a distinct lack of vehicles, it was public transport to the Storey Arms before climbing the Y Gryn route to the elbow of Corn Ddu.
With Mark Crimmings in charge of navigation we headed south-east down Craig Gwaun Taf in relatively good conditions until we arrived at trig point 642 high above the Upper Neuadd Reservoir - and that's when the problems started!
The cloud dropped very quickly and we couldn't see anything, including the outline of the right path to take.
Making our way down Bwlch Gwyn the extremely boggy conditions in the open ground forced us to the edge of the Taf Fechan Forest and after some dificult scrambling through waist high grass at one point we eventually emerged in open ground above Pontsticill Reservoir as a relieved Steve remarked on seeing the Boat House "We've had a result!".
Rather than head for the B road to take us to our destination, Mark decided to seek out the wooden bridge on the far edge of the forest to complete our walk to Pontsticill and a well earned meal in the Butchers.