(Redirected from Afon Ddu (Cowlyd))'Afon Ddu' (
Welsh: ''black river'') is a river in
Snowdonia,
North Wales. It flows from
Llyn Cowlyd on the south-eastern edge of the
Carneddau range to join the
river Conwy, passing
Pont Dolgarrog on the B5106, just south of the village of
Dolgarrog. The gorge cut by the river at this point is popular for gorge walking.