in Brecon Beacons · South Wales · other sections on Grwyne Fawr
A fun slabby run that only comes up occasionally.
Needs to be lots of water for this to be running, and drops off very quickly.
Putin just underneath the exit dam from Grwyne Fawr reservoir. Takeout onto a footpath at the confluence with the Grwyne Fechan or simply continue down to the main A40 road bridge.