Pen y Brynfforchog is subsidiary summit of Glasgwm in North Wales forming part of the Aran range in southern Snowdonia.Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. .
It is separated from Glasgwm by the pass, Bwlch y Fign. The summit is bare and marked by a few stones. The views to the Dyfi hills: include direct view of the Craig Portas ridge, with Maesglase and Cribin Fawr.
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