Approach notes

After having passed through the gate that leads to Gallt Yr Ogof immediately turn right and follow the river up for 35 minutes. This is the least wet route. Eventually, there will be a small hill on the left and a leaning wall should be visible at a distance. That is Wal Seren. The Prodigal Son is just a minute further round the hillside. Following the river is also the best way to reach the rest of the problems at the end of the Cwm.