Glasgwm is a mountain in North Wales

North Wales

North Wales is the northernmost unofficial region of Wales. It is bordered to the south by the counties of Ceredigion and Powys in Mid Wales and to the east by the counties of Shropshire in the West Midlands and Cheshire in North West England...

 forming part of the Aran range in southern Snowdonia

Snowdonia

Snowdonia is a region in north Wales and a national park of in area. It was the first to be designated of the three National Parks in Wales, in 1951.-Name and extent:...

. It is one of the three Marilyns that make up the range, the others being Aran Fawddwy

Aran Fawddwy

Aran Fawddwy is a mountain in southern Snowdonia, Wales, United Kingdom.The nearest urban centres to the mountain are Dinas Mawddwy to the south, Llanymawddwy to the southeast, Llanuwchllyn on the shores of Bala Lake to the north, and Rhydymain to the west. On the eastern slopes of Aran Fawddwy is...

 and Esgeiriau Gwynion

Esgeiriau Gwynion

Esgeiriau Gwynion is a mountain in north east Wales. It is the smallest of the three Marilyns that form the Aran range, the others being Aran Fawddwy and Glasgwm....

. To the West is Maesglase

Maesglase

Maesglase is a mountain in Snowdonia, North Wales, situated approximately four miles to the south-west of Aran Fawddwy. It is the highest of the "Dyfi Hills"....

 and the Dyfi hills, while to the South West lies Cadair Idris

Cadair Idris

Cadair Idris or Cader Idris is a mountain in Gwynedd, Wales that lies at the southern end of the Snowdonia National Park. The peak, which is one of the most popular in Wales for walkers and hikers,  is composed largely of Ordovician igneous rocks, with classic glacial erosion features such as...

. To the South lies the Plynlimon

Plynlimon

Plynlimon is the highest point of the Cambrian Mountains in Wales, and the highest point in Mid Wales. It is a massif that dominates the countryside of northern Ceredigion....

range. It is 780 metres (2,559.1 ft) high.

Craig Cywarch makes up the south face of Glasgwm. Its crags are very popular with rock climbers. A mountaineering club hut is found at the foot of the cliffs.

Glasgwm's summit sits on a large rocky knoll marked by a cairn. The high altitude lake of Llyn y Fign lies adjacent to the summit, and is one of the largest bodies of water adjacent to a 700m+ summit in England and Wales.