I first noticed Cil Drygwr when we were wandering about on the west side of Cwm Pennant. We'd been having a look at the remains of Castell Caerau, on the rocky slopes of Craig-y-Garn. It's an iron age fort, but looks more like a collection of random dry-stone walls- still mindblowing, nevertheless, to think that the rocks were put in place by the hands of our distant ancestors.
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