Y Garn (Plynlimon)

Blaenrheidol is a community in the county of Ceredigion, North Wales. It lies in the Cambrian Mountains of Mid Wales, approximately 12 miles (19 km) east of Aberystwyth on the A44 road, and includes Pumlumon. It includes the settlements of Ponterwyd, Ystumtuen and Llywernog. As the name suggests, a large section of the Afon Rheidol is in the community as well as the large man-made reservoir of Nant-y-moch.

Plynlimon, also spelled as Pumlumon in Welsh (also historically anglicised as Plinlimon and Plinlimmon), is the highest point of the Cambrian Mountains in Wales (taking a restricted definition of the Cambrian Mountains, excluding Snowdonia, the Berwyns and the Brecon Beacons), and the highest point in Mid Wales. It is a massif that dominates the surrounding countryside and is the highest point (county top) of Ceredigion (both the modern council area, and the historic county, also known as Cardiganshire). The highest point of the massif itself is Pen Pumlumon Fawr, which is 752 metres (2,467 ft) above ordnance datum. Its other important peaks are Pen Pumlumon Arwystli, Y Garn, Pen Pumlumon Llygad-bychan and Pumlumon Fach. Bryn yr Ŵyn, or Hill of the Lambs, is a Dewey in the foothills. The longest river in Britain, the River Severn, has its source on the mountain, as do the rivers Wye and Rheidol. Folklore says there is a sleeping giant in Plynlimon.

Pumlumon Fach is a top of Pen Pumlumon Fawr on the Plynlimon massif, a part of the Cambrian Mountains in the county of Ceredigion, Wales. It lies on small ridge heading north-west from the summit of Pen Pumlumon Fawr. The summit is marked by small cairn, and overlooks the Nant-y-moch Reservoir to the north and Llyn Llygad Rheidiol to the east. The views also include the smaller summits of Drosgol (550m) and Banc Llechwedd-mawr (560m) and Cwm Hyddgen, a hide out of Owain Glyndŵr and his army.

Eisteddfa Gurig is a hamlet located in Ceredigion on its border with Powys and situated along the A44. Its name comes from the Welsh word eisteddfa, meaning seat and the name of St Curig. This gives the meaning of Curig's seat. It is said that Curig rested on the hill here and looked down into the Wye Valley. He decided to build a church in the valley, which is still there today in the village of Llangurig.The famous Elvis Rock is located here.

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. The summit is boggy, and is marked by a few stones. The views include Rhos Fawr, Drygarn Fawr, Pen y Garn to the south and Aran Fawddwy, Glasgwm, Tarrenhendre and Tarren y Gesail to the north. The River Wye, has its source just south of the summit. The glacial lake of Llyn Llygad Rheidiol lies to the north.

The Elvis Rock is a rock alongside the A44 in Powys, Wales, near its border with Ceredigion. It is one of the most well known pieces of graffiti in Wales, with the word "ELVIS" written on it. The rock is located beside the main trunk road through the country, and appears out of context with the surrounding landscape.

Nant-y-moch Reservoir (Welsh pronunciation ) is situated in the Cambrian Mountains in northern Ceredigion, Wales, near Pumlumon. The reservoir which flooded a part of the valley of the River Rheidol and its headwaters derives its name from a stream, the Nant-y-moch (in English = the pigs stream,), which formerly flowed into the River Rheidol at this spot. The dam is about three miles north of the village of Ponterwyd. The reservoir forms part of the Cwm Rheidol hydroelectric power scheme and the headwaters of the reservoir include the source of the River Rheidol. The Nant-y-moch component of the hydroelectric scheme has an installed capacity of 13 MW generated as the water from Nant-y-moch enters Dinas Reservoir.

Y Glog or Draws Drum is a mountain in Ceredigion, Wales. It is 574 metres (1883 feet) above sea level and is located a few miles south of Pumlumon, north of Pen y Garn and just south of the A44 road. It is a HuMP. It is located in an area of bleak moorland with the Cefn Croes Wind Farm and the small lakes Llynoedd Ieuan nearby.

The Battle of Mynydd Hyddgen was a battle between the Welsh and English in June 1401. It was part of the Welsh revolt led by Owain Glyndŵr against English rule that lasted from 1400 to 1415. Its location was on the western slopes of Pumlumon, near the Ceredigion/Powys boundary.

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, Drygarn Fawr, Pen y Garn to the south and Aran Fawddwy, Glasgwm, Tarrenhendre and Tarren y Gesail to the north. The longest river in Britain, the River Severn, has its source on a lower boggy plateau to the north of the summit.

Cefn Croes is a wind farm in Ceredigion, Wales. It is located in the Cambrian Mountains on Cefn Croes mountain, 573m (1,880 ft) south of the A44 road between Aberystwyth and Llangurig, in west Wales. The construction of the wind farm commenced in February 2004, and was completed in the spring of 2005 when the 39 wind turbines started producing electricity. The maximum installed nameplate capacity is 58.5 MW.Nearby is the HuMP Y Glog (Draws Drum).

Mwyngloddfa Nantiago is a Site of Special Scientific Interest in Brecknock, Powys, Wales. It is located on the eastern flank of the Plynlimon range of mountains. The spoil tips at the disused mine display examples of mineralisation.