Diffwys West Top

Diffwys is a mountain in Snowdonia, Wales, near Barmouth and forms part of the Rhinogydd. On the north side is an exposure of the Caerdion Syncline. It is technically a subsidiary summit of Y Llethr, missing Marilyn status by 2m. It is therefore a sub Marilyn. The summit has a trig point. To the north is Y Llethr and Crib-y-rhiw, to the east is Y Garn, to the south is Cadair Idris, and to the west is its top Diffwys West Top.

Y Llethr is the highest mountain in the Rhinogydd range of Snowdonia, in north Wales. The summit consists of a flat grassy top marked only by a small cairn. The summit is more in keeping with its southern flanks than its rugged northern approach. The shortest route to the summit goes from the valley of Cwm Nantcol in the west, either directly or via Bwlch Drws Ardudwy and over the mountain of Rhinog Fach. To the south lies the mountain of Diffwys, to the south-east lies the mountain of Y Garn, to the north lies Rhinog Fach and to the west lies the hill of Moelfre.

Crib-y-rhiw is a top of Y Llethr and a ridge in the Rhinogydd of Snowdonia, north Wales. The summit straddles a thin ridge connecting Y Llethr to Diffwys.

The Rhinogydd (a Welsh plural form, often anglicised as Rhinogs and also known by the alternative Welsh plural Rhinogau) are a range of mountains located east of Harlech in North Wales. The name Rhinogydd derives from the names of two of the more famous peaks, Rhinog Fawr and Rhinog Fach, although the greatest elevation in the range is reached by Y Llethr, 756 m (2,480 feet). Foel Penolau, the northernmost summit of the range, was promoted to a Hewitt in 2018 due to a new survey. The Rhinogydd are notably rocky and heather-clad towards the northern end of the range, especially around Rhinog Fawr, Rhinog Fach and towards Moel Ysgyfarnogod. The southern end, around Y Llethr, Diffwys and the Ysgethin Valley has a softer, grassy character. A population of feral goats are in the range. Over 30 km² are protected as a Special Area of Conservation and a National Nature Reserve.

Rhinog Fach is a mountain in Snowdonia, North Wales and forms part of the Rhinogydd. Technically, Rhinog Fach is a subsidiary summit of Y Llethr, but is a Marilyn. To the north lies its higher cousin Rhinog Fawr, separated by the shapely pass of Bwlch Drws Ardudwy. Although shorter than the highest mountain in the Rhinog range, Y Llethr, it is often regarded as the true 'king of the Rhinogydd' due to its spectacular rocky peak. Unlike Fach, Y Llethr's peak is grassy and unremarkable.

The Clogau (pronounced "clog-eye") Gold Mine (also known as Clogau St David's) is a gold mine near Bontddu in North Wales.

Cwm Nantcol is a valley in the Ardudwy area of the county of Gwynedd in Wales. It lies in the Rhinogydd range of mountains in Snowdonia and carries the Afon Cwmnantcol. At the head of Cwn Nantcol is the Bwlch Drws Ardudwy pass, from where it is possible to negotiate the summits of Rhinog Fawr and Rhinog Fach.

Bontddu (meaning Black bridge) is a small settlement just east of Barmouth, near the town of Dolgellau in Gwynedd, Wales. It is in the community of Llanelltyd.

Rhinog Fawr is a mountain in Snowdonia, North Wales and forms part of the Rhinogydd range. It is the third highest summit of the Rhinogydd, losing out to Y Llethr and Diffwys respectively. Its smaller cousin Rhinog Fach lies to the south, separated by the pass of Bwlch Drws Ardudwy, while its other neighbour, Moel Ysgyfarnogod lies to the north. In common with most of the range, the terrain is characterised by hard sedimentary rock covered with heather, making progress on foot difficult. At 510m, nestled in crags, lies Llyn Du, a small tarn beneath the summit. The ascent is most easily made from the north-east or north-west, via the Roman Steps pass.

Moelfre is a hill in Wales on the far western edge of the Snowdonia National Park, 3 miles (4.8 km) from the village of Dyffryn Ardudwy, 5 miles (8.0 km) from the village of Llanbedr and about 10 miles (16 km) from the town of Harlech. It forms part of the Rhinogydd range. Moelfre reaches a height of 589 metres (1,932 ft). Moelfre is a prominent peak that separates Cwm Nantcol from Ysgethin Valley. Moelfre is also known for a legend of three women who worked on the sabbath and were turned into standing stones.

Ardudwy (Welsh pronunciation: [arˈdɨ̞duːɨ̯]) is an area of Gwynedd in north-west Wales, lying between Tremadog Bay and the Rhinogydd. Administratively, under the old Kingdom of Gwynedd, it was first a division of the sub kingdom (cantref) of Dunoding and later a commote in its own right. The fertile swathe of land stretching from Barmouth to Harlech was historically used as pasture. The name exists in the modern community and village of Dyffryn Ardudwy.

Borthwnog is a family name given to the Borthwnog estate in Gwynedd, north-west Wales. Borthwnog Hall was the Manor House of the estate which encompassed the adjacent Borth farm and lands up the Taichynhaeaf valley and Bontddu. The earliest records date the house to the late 17th century. The building, has been modified to a Georgian style and has, along with many other buildings in the area, been listed as a grade II listed building.