The valley is deep and narrow, and meanders considerably between Rhandirmwyn and the Llyn Brianne reservoir. The track on the right is an old one to a disused slate quarry about 1600 metres away at Chwarel Ystrad-ffin (SN78704605). Apparently it had a tram-line too, which shows better here: [[1955919]]
Uploaded to Geograph by Roger Kidd on 2 April 2011
Photo © Roger Kidd, 2 April 2011. Licensed for reuse under this Creative Commons licence