Glasgwm is something of an outlier on the Aran ridge, lying well to the west of the main summits. At 774 metres, it is also significantly lower. It is, though, well worth visiting in its own right, boasting not only the usual summit cairn but also a somewhat surprising lake just a few metres below the top. Today’s route takes a track winding steeply up below the spectacular cliffs of Craig Cywarch and then continues on a gentler gradient up the south ridge of Glasgwm to Llyn y Fign and the summit. We descend initially to the NE before turning to head down through the craggy Cwm Cywarch. The path, which is steep and rocky in places, offers wonderful views down the Cwm to the green valley and the hills beyond.