We set off from the visitors centre and soon reach the huge dam wall of Caban-Coch. We climb up a zig zag path to gain a full, up close view of the massive dam wall to reach a tarmac track that runs along its southern shore.
This eventually reaches Garreg Ddu reservoir. We then pick up a quieter track along the eastern shore of Garreg-ddu reservoir flanked by the impressive rocky crags of Mynydd Dolfolau.
After almost 2 miles we reach a bridleway which ascends through beautiful pine woods to reach Penygarreg dam with its distinctive central tower. A short stretch on the road takes us to the Penbont House where we can stop for tea and cake in the newly refurbished tearooms.
After our stop we pick up another bridleway which skirts the western shore of Garreg ddu reservoir to eventually reach Glannau plantation. Here we must pick up a path that traverses the mossy ravine of Nant Methan before re-entering a conifer woodland called Llanerchi at the southern end of the reservoir.
On reaching the dam bridge we can retrace our steps along the shore of Caban-Coch to return us back to the visitor centre.
