Moel Siabod is a mountain in Snowdonia, North Wales, which sits isolated above the villages of Betws-Y-Coed and Capel Curig. At 872m it is the highest peak in the Moelwynion mountain range. The UK National Mountain Centre, Plas-y-Brenin, is located at the foot of Moel Siabod. From the top of the mountain, it is reputedly possible to see 13 of the 14 highest peaks in Wales on a clear day without turning one's head. The words Moel Siabod translate from Welsh as shapely hill. The mountain is easily accessible from the north via Capel Curig and nearby Pont Cyfyng (by a separate but similar path) and from the south via Dolwyddelan.
The highest part of the mountain forms a relatively level, rocky ridge approximately 800 m long, running roughly south-west (from the summit) to north-east. At the north-eastern end of this main ridge there is a fairly steep descent towards Pont Cyfyng. At the south-west edge of the main ridge there is a further, much steeper ridge that branches off to the east, as well as several precipitous cliffs.
The north-west side of the main ridge is relatively gentle and supports a variety of flora and has numerous paths. The south-east side has many sharp drops down to a hanging valley. This valley, fenced in on two sides by the main ridge and the ridge running east from the summit, is at roughly 500 m above sea level and contains Llyn-y-foel (Welsh for lake of the mountain). There is both a steep descent, following a stream that emerges from the lake to the south-east, and a gentle descent, to the north-east, from this valley.