Pen y Garn (head of the cairn) is a

mountain A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually highe ...

in the Cambrian Mountains, Mid Wales standing at 611 metres above sea level. Pen y Garn tops a 500–600 m high plateau, which includes the controversial Cefn Croes wind farm. The summit has a very large shelter cairn hollowed out from the remains of an ancient burial cairn and a

trig point A triangulation station, also known as a trigonometrical point, and sometimes informally as a trig, is a fixed surveying station, used in geodetic surveying and other surveying projects in its vicinity. The nomenclature varies regionally: they a ...

. The wind turbines are very near the summit. To the north some 10 km, the whole

Plynlimon Pumlumon (historically anglicised in various ways including ''Plynlimon,'' Plinlimon and Plinlimmon) is the highest point of the Cambrian Mountains in Wales (taking a restricted definition of the Cambrian Mountains, excluding Snowdonia, ...

range can be seen, including the summits of Y Garn,

Pen Pumlumon Fawr A pen is a common writing tool, writing instrument that applies ink to a surface, usually paper, for writing or drawing. Early pens such as reed pens, quill pens, dip pens and ruling pens held a small amount of ink on a Nib (pen), nib or in a sm ...

Pen Pumlumon Llygad-bychan Pen Pumlumon Llygad-bychan is a subsidiary summit of Pen Pumlumon Fawr and the third highest summit on the Plynlimon massif, a part of the Cambrian Mountains in the county of Ceredigion, Wales. It is not named on Ordnance Survey walking maps. ...

and

Pen Pumlumon Arwystli Pen Pumlumon Arwystli is the second highest summit on the Plynlimon massif, a part of the Cambrian Mountains in the county of Ceredigion, Wales. The summit is grassy, and is marked by 3 large ancient cairns. The views include Rhos Fawr, Dryga ...

. 21 km to the west is the town of Aberystwyth; Drygarn Fawr lies 20 km to the SSE .Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. .

References

{{reflist Hewitts of Wales Marilyns of Wales Nuttalls Mountains and hills of Ceredigion Elenydd