Bryn-y-Castell

Taking the B4391 towards Bala from Llan Ffestiniog for just over a mile, you pass close to an Iron Age hillfort situated in rough moorland known as Bryn-y-Castell. The site was excavated by students from Plas Tan-y-Bwlch (Maentwrog) between 1979 and 1985, and it was found to be an important site for iron production until the arrival of the Romans in North Wales when it was abandoned.