Mynydd y Gelli

The River Cynon (Welsh: Afon Cynon) in South Wales is a main tributary of the Taff. Its source is the rising of Llygad Cynon (OS grid ref SN 95240 07740) at 219m above sea level at Penderyn, Rhondda Cynon Taf and flows roughly southeast, into the Taff at Abercynon in the same district. The water emerging at Llygad Cynon has been traced back to the sink of the Nant Cadlan at Ogof Fawr.The Nant Cadlan and its tributary the Ceunant Du rise on the slopes of Cefn Cadlan to the northeast of Penderyn flowing initially southeast and then south on the east side of the village to the point where the Cynon arises, adding to the flow emerging from the rising. The waters of the Nant y Bwllfa enter the Cynon as a left-bank tributary between Penderyn and Hirwaun. Downstream, the course of the river has been altered at the former Hirwaun Ironworks. The combined flow of the Nant Hir and Nant Melyn enter the river to the north of Penywaun and that of the Nant y Gwyddel to the east of Penywaun. The Dare River enters as a right bank tributary at Aberdare and the Aman River at Aberaman. The final tributary of any size is the Nant Pennar which enters on the Cynon's left bank at Mountain Ash (Welsh: Aberpennar).

Gelli is a village in the Rhondda Fawr valley, in the county borough of Rhondda Cynon Taff, Wales, situated on the southern bank of the Rhondda Fawr River. Gelli is a former coal mining village which is a district of the community of Ystrad.

Rhondda (Welsh: Y Rhondda) was a local government district in the geographical area of the Rhondda Valley, south Wales. The district was initially created as Ystradyfodwg Local Government District from parts of Ystradyfodwg, Llanwonno and Llantrisant parishes, Glamorgan, in 1877, when the Local Government Act 1858 was adopted. A local board was formed to govern the area. The Local Government Act 1894 reconstituted the area as Ystradyfodwg Urban District, with an elected urban district council replacing the local board. It was renamed Rhondda Urban District in 1897 after the River Rhondda. In 1955 Rhondda received a charter of incorporation to become the Municipal Borough of Rhondda.The Local Government Act 1972 completely reorganised local government in Wales in 1974. The Borough of Rhondda, with an identical area to the municipal borough, was one of six local government districts of the new county of Mid Glamorgan from 1974 to 1996. The borough was abolished in 1996, with its area passing to the unitary Rhondda Cynon Taf county borough.

Clydach Vale (Welsh: Cwmclydach and adjoining Blaenclydach) is a village in the community of Cwm Clydach, northwest of Tonypandy in the county borough of Rhondda Cynon Taf, within the Rhondda Valley, Wales. It is named for its situation on the Nant Clydach, a tributary of the River Rhondda.

Nebo, Ystrad Rhondda was the first Baptist chapel in the Rhondda Valleys. Founded in 1786, and known as Ynysfach, its first minister was one Thomas Edwards. The name was changed to Nebo in the early part of the nineteenth century. Nebo was the mother church to numerous other chapels in the valley including Hebron, Ton Pentre in 1868, and Noddfa, Treorchy which subsequently became much larger than Nebo in terms of membership. With the industrialisation of the valley it was rebuilt and extended in 1857 and again in 1876. Its membership peaked at 318 in 1905, in the immediate aftermath of the Welsh Revival. By 1940 the membership had fallen to 132, with a further sharp decline to 62 by 1945. Garfield Eynon became Nebo's last minister in 1953 and the church was without a minister after his departure in 1962. Nebo closed in the early 1980s and the chapel was subsequently demolished. A short portion of the boundary wall and fence remains in situ.Some housing was later built adjacent to the site, which was named Nebo Estate.

Ystrad Rhondda railway station is a railway station serving Ystrad in Rhondda Cynon Taf, Wales. It is located on the Rhondda Line. Alphabetically, it is the last station in the UK with the first being Abbey Wood station in southeast London.

Ton Pentre Football Club (Welsh: Clwb Pêl-droed Ton Pentre) is a football team based in Ton Pentre, Wales, which plays in the South Wales Alliance League Premier Division, the fourth level of Welsh league football. Nicknamed the "Rhondda Bulldogs", the team plays at Ynys Park, Ton Pentre, Rhondda Cynon Taff. Home strip is all red, away strip is all blue with white detail.

Cwm Clydach is a community and electoral ward to the northwest of Tonypandy in Rhondda Cynon Taf, Wales. The community and ward covers the valley of the Nant Clydach, which includes the cojoined villages of Clydach Vale and Blaenclydach.The community includes Cwm Clydach Countryside Park, created on the site of a coal mine, which has two lakes and is a haven for birds, insects and newts.

Ton Pentre (Welsh: Ton Pentre) is a village in the Rhondda Valley in the county borough of Rhondda Cynon Taf, Wales. Historically part of Glamorgan, Ton Pentre, a former industrial coal mining village, is a district of the community of Pentre. The old district of Ystradyfodwg was named after the church at Ton Pentre. Ton Pentre is, perhaps, best known for an event in 1924, when the Duke of York (later George VI of the United Kingdom) played a round of golf with Trade Unionist Frank Hodges.

Cambrian & Clydach Vale Boys & Girls Club is a Welsh football club based in Clydach Vale in the Rhondda Valley. The club was founded in 1965 as Cambrian United and, after playing their football in the South Wales Amateur League for a number of years, they joined the Welsh Football League in 2005. A merger between Cambrian United and Clydach Vale Boys and Girls Club led to the current club. The side have risen through the divisions by finishing in promotion positions in Divisions Three and Two in successive seasons and are currently members of the Cymru South.

Craig Pont Rhondda is a Site of Special Scientific Interest in Llwynypia, Rhondda, south Wales. The Countryside Council for Wales states that the site has been categorised as a Site of Special Interest because it "...is the largest remaining broadleaved woodland in the valley of the Rhondda Fawr. The dominant tree is Sessile Oak, some stands of which have been coppiced in the past. Other trees include ash, birch, and hazel, with stands of alder in the wetter places."

Ton Pentre railway station is a railway station serving the village of Ton Pentre in Rhondda Cynon Taf, Wales. It is located on the Rhondda Line.