| Mynydd Graig Goch | |
| Elevation M: | 610 |
| Prominence M: | 71 |
| Prominence Ref: | [1] |
| Parent Peak: | Craig Cwm Silyn |
| Listing: | Hewitt, Nuttall |
| Translation: | mountain of the red rock |
| Language: | Welsh |
| Location: | Snowdonia, Wales |
| Coordinates: | 53.0128°N -4.2414°W |
| Grid Ref Uk: | SH497485 |
| Topo: | OS Landranger 115 |
Mynydd Graig Goch (Welsh, 'mountain of the red rock') is the western end peak of the Nantlle Ridge, and is a subsidiary summit of Craig Cwm Silyn. It is also the most westerly 2000 ft peak in Wales. For many years it was excluded from lists of the Welsh 2000 ft mountains because of a spot height of 609 metres (1998') on OS maps. However, this changed in 2008; after years of speculation a group of hillwalkers carried out a precise GPS survey of the peak, measuring the absolute height as 609.75 metres (2000 ft 6 in).[2] [3]
The summit is boulder strewn, crowned by several tors of rock, of which one is the true summit. The southern and western flanks consist of large boulder fields. The north-east face has steep cliffs, that form the backwall of the glacial Cwm Dulyn. Cwm Dulyn's lake Llyn Cwm Dulyn contains a population of Arctic char. Views from the summit are extensive, overseeing Lleyn and the coast. Garnedd Goch, Mynydd Mawr, Moel Hebog and Snowdon (Yr Wyddfa) are all observable.