Nedd Fechan

The Afon Pyrddin is a river forming a short section of the boundary between Powys and Neath Port Talbot in Wales, United Kingdom. It also forms a part of the boundary of the Brecon Beacons National Park. The river and its waterfalls are one of the key attractions of the Fforest Fawr Geopark designated in 2005. The name could mean 'river by the striking fortress' or 'sweet-flowing river'. The streams of Nant y Bryn, Nant y Fedwen and Nant Hir come together to form the Pyrddin which flows south-eastwards for 3 miles (5 km) to its confluence with the Nedd Fechan (sometimes also known historically in an Englished form "Neath Vaughan"; at one time this would have been a fair indication of the Welsh pronunciation in English spelling, but with changes in English pronunciation it has now diverged considerably)).

Pontneddfechan (Welsh for 'bridge over the Little Neath'; pronounced [pɔntˌniðˈvɔːn]; also known as Pontneathvaughan) is a village in Powys, Wales. It is the southernmost village in the historic county of Brecknockshire, within the Vale of Neath and in the community of Ystradfellte. It stands at the confluence of the rivers Mellte and Nedd Fechan ("Neath Vaughan") and gives access to a series of waterfalls that adorn the upper Neath valley. Dinas Rock is a quarried limestone promontory east of the village, popular with visitors.

The Afon Sychryd is a river in Rhondda Cynon Taf, Wales. Although it is a relatively short river, with a total length of 3 miles (5 km), it is notable for the gorge and two waterfalls through which it flows.

Waterfall Country (or sometimes Waterfalls Country) (Welsh: Bro'r Sgydau) is a name often given to the upper reaches of the Vale of Neath in South Wales. The tourist area around the head of the valley has an unusually large number of publicly accessible waterfalls. The area is not officially defined but generally includes the group of falls on the Nedd Fechan, Pyrddin, Hepste and Mellte rivers, all of which lie between the villages of Pontneddfechan and Ystradfellte in the Brecon Beacons National Park. Each of these falls lies within or on the boundary of the county of Powys. A few miles further west are Henrhyd Falls on the Nant Llech, a tributary of the Tawe and to the south-west are Melin Court Falls on the Melin Court Brook, a tributary of the River Neath. These, along with Aberdulais Falls on the Dulais, a further tributary of the Neath are also encompassed by the term 'Waterfall/s Country' by some writers. Collectively the falls are one of the more popular natural attractions in South Wales, which has caused problems of erosion in the vicinity of many of the falls. Most occupy locations designated as sites of special scientific interest and as special areas of conservation which aim to protect the biodiversity and geodiversity of these sites. The designations place a duty on the landowners and managers to protect the sites and so various erosion control measures have been put in place in an attempt to counter the worst problems.

Dinas Rock (Welsh: Craig y Ddinas, "Fortress Rock") is a high promontory of Carboniferous Limestone which rises between the Afon Mellte and its left-bank tributary, the Afon Sychryd on the border between the county of Powys and the county borough of Neath Port Talbot in south Wales. It can be found near the village of Pontneddfechan near Glyn Neath at the head of the Vale of Neath. It derives its name from the presence of Iron Age earthworks on its summit, dinas in Welsh signifying a defensive site or "city".

The River Mellte (Welsh: Afon Mellte; Welsh pronunciation: [ˈmɛɬtɛ]) is a river in south Wales. It is formed by the confluence of the Afon Llia and the Afon Dringarth. It then flows south through the village of Ystradfellte to Pontneddfechan where it joins with the Nedd Fechan to become the River Neath (Welsh: 'Afon Nedd'). The river derives its name from 'mellt' - the Welsh word for 'lightning' - after its tendency to rise and fall rapidly in response to heavy rainfall.

Pontwalby Halt railway station served the area of Pont Walby, in the historical area of Glamorganshire, Wales, from 1911 to 1964 on the Vale of Neath Railway.

British Rhondda Halt railway station served the area of Pont Walby, in the historical county of Glamorganshire, Wales, from 1906 to 1911 on the Vale of Neath Railway.

Cefn Rhigos (name meaning '(the) ridge (at) Rhigos') is a hamlet (place) to the west of the village of Rhigos, Wales. Despite being eight miles from the town centre, for postal purposes it comes under Aberdare. It is the most westerly named settlement of the Cynon Valley. The border with The Vale of Neath lies a few hundred yards to the west.

Glynneath (Welsh: Glyn-nedd "valley of the River Neath"), also spelt Glyn-neath and Glyn Neath, is a town, community and electoral ward lying on the River Neath in the county borough of Neath Port Talbot, Wales. It was formerly in the historic county of Glamorgan. Glynneath ward covers only part of the community, with some 840 electors included in the neighbouring ward of Blaengwrach. Industrialisation reached Glynneath when coal mining started in 1793, and rapidly expanded when the Neath Canal came to the town in 1775. Many features of the old canal still survive to the present time. There are waterfalls to the north east at Pontneddfechan near the Brecon Beacons and large parts of the rural area are heavily forested.

Glynneath is the name of an electoral ward in Neath Port Talbot county borough, Wales. The electoral ward of Glynneath consists of some or all of the following settlements: Glynneath, Morfa Glas, Rheola, Crugau, Pont-walby, Bryn-awel, Pentreclwydau and Aber-pergwym in the parliamentary constituency of Neath. Most of the ward consists of woodland. The floor of the Vale of Neath crosses the ward on its south eastern edge. The biggest settlement in the ward is in the town of Glynneath near the northeast. The far north eastern areas of the ward consists of open farmland. Glynneath is bounded by the wards of Onllwyn to the north; Tawe Uchaf (in Powys) to the north-east; Rhigos (in Rhondda Cynon Taf) to the east; Blaengwrach to the south-east; Resolven to the south; Crynant to the south-west; and Seven Sisters to the west.

Dolarddyn Crossing railway station served the village of Castle Caereinion, in the historical county of Montgomeryshire, Wales, from 1929 to 1931 on the Welshpool and Llanfair Light Railway.