Afon Sychryd

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".

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 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.

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.

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.

The Nedd Fechan is a river almost wholly within the county of Powys, Wales. It rises on the eastern slopes of Fan Gyhirych in the Fforest Fawr section of the Brecon Beacons National Park and flows south for 7 miles (11 km) to join with the Afon Mellte at Pontneddfechan, their combined waters continuing as the River Neath (Welsh Afon Nedd) to the sea near Swansea. The only significant tributary of the Nedd Fechan is the Afon Pyrddin which joins it at Pwll Du ar Byrddin ('the black pool of the Pyrddin'). Downstream of this confluence it forms the boundary between Powys to its east and Neath Port Talbot to its 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.

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)).

Cwm-Hwnt is a tiny hamlet to the west of Rhigos and south of Cefn Rhigos in the Cynon Valley, one of the South Wales Valleys. It is the farthest named settlement from the town of Aberdare that for postal reasons comes under that town. The name of Cwm-Hwnt comes from the English meaning "Valley Beyond" There was previously a through road to the geographically neighbouring villages of Cwmgwraech and Blaengwraech in The Vale of Neath which was referred to as "the Parish Road". However this road was closed in the late '90s due to the Sellar Opencast mine being dug, and the only routes to these villages are now via Cefn Rhigos and the main roads through Glyn Neath

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.

Rhigos () is a small village on the saddle of higher ground between the Vale of Neath and the Cynon Valley. It was part of the old Neath Rural district Council under Glamorgan until 1974. The village then came under the jurisdiction of The Cynon Valley Borough which subsequently became Rhondda Cynon Taf, South Wales in 1996. It lies just off the old Aberdare road that was the main link between Aberdare and Glynneath, before the A465 road was extended in the 1960s. The hamlets of Cefn Rhigos and Cwm-Hwnt lie to the west of the main village. The population of the community in the 2011 census was noted as 894. For postal purposes it comes under the town of Aberdare, although it is some 7 miles (11 km) from Aberdare town centre, and 2 miles (3.2 km) from Glynneath. It was noted as a township in the parish of Ystradyfodwg in several historical references and people moved to this rural area to work in local industries. Today, the village is a quiet place to live with views of the Brecon Beacons National Park to the north and is within walking distance of Waterfall Country.

Rhigos Halt railway station served the village of Rhigos, Rhondda Cynon Taf, Wales, from 1911 to 1964 on the Vale of Neath Railway.