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Canoe weirs at Millennium Park - - 76966.jpg
Canoe weirs at Millennium Park.
Treharris is located in Merthyr Tydfil
Treharris shown within Merthyr Tydfil
Population 6,356 (2011)[1]
OS grid reference ST095975
  • Treharris
Principal area
Ceremonial county
Country Wales
Sovereign state United Kingdom
Post town Treharris
Postcode district CF46
Dialling code 01443
Police South Wales
Fire South Wales
Ambulance Welsh
EU Parliament Wales
UK Parliament
Welsh Assembly
List of places
Merthyr Tydfil
51°40′08″N 3°18′36″W / 51.6689°N 3.3100°W / 51.6689; -3.3100Coordinates: 51°40′08″N 3°18′36″W / 51.6689°N 3.3100°W / 51.6689; -3.3100

Treharris is a small town and community in the Taff Bargoed Valley in the south of Merthyr Tydfil County Borough, South Wales. It is located about 0.6 miles (1.0 km) west of Trelewis, from which it is separated by the Taff Bargoed river, and 0.9 miles (1.4 km) from Nelson in Caerphilly county borough and has a population of 6,252, increasing to 6,356 at the 2011 Census. As a community, Treharris includes the villages of Quakers Yard and Edwardsville. Due to steepness and narrowness of both the Taff and Taff Bargoed valleys at Treharris several notable bridges and viaducts have been built in the area.[2]


The town was formed around Harris's Deep Navigation Colliery, which begun coal mining excavations in 1878, after sinking started in 1872. The colliery and village were named after F. W. Harris and his Harris Navigation Steam Coal Company. Originally known as Harris's Navigation Pits, the Deep Navigation shafts were the deepest at the time in South Wales. With the some shafts sunk to a depth of 760 yards (2,280 feet, 695 metres) to access the Nine Feet Seam, 200 yards (600 feet, 183 metres) deeper than any other colliery in the coalfield.[3] Ownership transferred to the Ocean Coal Co. Ltd. in 1893 - so called because the pit supplied the coal for the transatlantic ocean liners, including the Cunard Line. The pit became known as Deep Navigation Colliery and remained in production until 1991.

During the early 21st century, like many ex-mining villages in the area, Treharris underwent significant regeneration to the town/village centre. Most, if not all of the land where Deep Navigation was situated has been landscaped and is now part of the new Parc Taff Bargoed, where many of the local football and rugby teams train and play.

Sport and leisure[edit]

Welsh International Climbing Centre

The Welsh International Climbing Centre, an indoor climbing centre and caving complex, is built on the site of the former Trelewis Drift mine and is an integral part of the Millennium park complex.

Treharris has the oldest Boys and Girls club in the whole of the United Kingdom.[4]

Treharris Athletic is the local football (soccer) team, once winners of the Western League in 1910, who now ply their trade in the Welsh Football League.

Valley Cougars are an amateur Rugby League that play their home games at Treharris Rugby Club they play in Rugby Leagues 4th tier, the Conference League South

Treharris Mini and Junior Rugby Football Club was founded in 1994. The continued success of this club paved the way for the re-introduction of senior and youth rugby in 2009. Treharris Rugby is represented at senior level by Treharris Phoenix who compete in the WRU/SWALEC Leagues. Treharris Youth compete in the Welsh Rugby Union RAF Youth League.


Treharris is served by Quakers Yard railway station, on the Merthyr Line between Cardiff Central and Merthyr Tydfil.

Arts & entertainment[edit]

The sketch "The Worm That Turned", from the BBC series The Two Ronnies, was filmed around Treharris.[citation needed]

The 1972 film Sunstruck starring Harry Secombe was partly filmed in the two the villages of Treharris and Trelewis. The Welsh school featured, Webster Street School, has now been demolished for housing.

Notable people[edit]

St Matthias's Church


  • Davies, John; Jenkins, Nigel (2008). The Welsh Academy Encyclopaedia of Wales. Cardiff: University of Wales Press. ISBN 978-0-7083-1953-6. 
  • Thomas, Dr. W. Gerwyn (1979). Welsh Coal Mines. Cardiff: National Museum of Wales. ISBN 0-7200-0059-9. 


  1. ^ "Town population 2011". Retrieved 9 November 2015. 
  2. ^ Davies (2008), pg 554.
  3. ^ Thomas (1979), pg 27.
  4. ^ Treharris Boys and Girls Club is back in business University of Glamorgan

External links[edit]