Spate stream with 4 brilliant gorges. There is harder gd4 drop about halfway down after the 2nd gorge, and a series of steps below the bridge in Trawsfynydd can be gd4 in big water, watch out for sticky stoppers.
Takeout at the lower road bridge in Trawsfynydd, and putin at the A4212 road bridge at Pont Dolydd Prysor.
Rainchasers is best experienced as an app.