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Cwmcarn - - 89409.jpg
Cwmcarn as viewed from the Forest Drive
Grid reference: ST219935
Location: 51°38’6"N, 3°7’48"W
Post town: Newport
Postcode: NP11
Dialling code: 01495
Local Government
Council: Caerphilly

Cwmcarn is a village situated in the Ebbw Valley in Monmouthshire, nine miles north-west of Newport. It grew with 19th-century coal mining, but is now known for its extensive mature forestry and greenery, that attract thousands of visitors and mountain biking enthusiasts each year.

Pre-industrial history

Significant settlement at Cwmcarn came with Bronze Age migration of local tribes from the Caldicot and Wentloog Levels to the uplands of Mynydd y Grug, Mynydd Machen and Mynydd Maen (Twmbarlwm) and led to a later Iron Age (900–55 BC) hillfort to be constructed by the Silures on Twmbarlwm.

Roman forces took control of most of what became the Roman province of Britannia Superior in AD 43 but then took a further 25 years to gain control of the present day South Wales valleys. Roman control remained established until full scale withdrawal in the 5th century AD when the Kingdoms of Gwent and Glywysing were established. Gwent was defined as the land between the River Usk and the River Wye and Glywysing, the land between the River Usk and the River Tawe. Cwmcarn, located where the Carn and Ebbw river valleys meet, being situated within the Kingdom of Glywysing.

The placename of Cwmcarn came about in 942 when Llywarch ap Cadogan gave Villa Treficarn Pont ('estate near the bridge over the Carn') to a Bishop of Llandaff named Wulfrith with King Cadell's guarantee, i.e. the place where the Carn meets the Ebbw (now Cwmcarn).

Following the Norman invasion the separate townships of Abercarn, Cwmcarn and Newbridge were given a manorial title of Abercarne. The three townships were also within the boundaries of the ancient parish of Mynyddislwyn.

Economic activity

Coal mining

Cwmcarn lies at the south-eastern edge of the South Wales coalfield. The colliery development in the Cwmcarn area started in 1836, when a single shallow, 180ft downshaft, the Abercarn No.6., was sunk into the Rock (or Tillery) seam, for the nearby Prince of Wales Colliery at Abercarn operated by the Monmouthshire Iron and Coal Company. The second shaft was excavated by the Ebbw Vale Steel Iron & Coal Company to target the deeper No.4 Steam and Black Vein seams. The colliery was run as an individual unit until it was later acquired by Partridge Jones and John Paton and Company in 1935. It was closed by the National Coal Board in November 1968 and the site was cleared after becoming uneconomical to run.

The Cwmcarn Forest Drive now runs over the shafts of the colliery and a relics of colliery buildings can still be seen on the slope above the old shaft. The present day lake that is stocked by the Cwmcarn Angling Association was originally down stream of the colliery's washery.


A telecoms factory located between the Ebbw River and the A467 road was part of the British Post Office and British Telecom before being sold to Standard Telephones and Cables, Northern Telecom, and more recently Solectron. The factory closed during Spring 2007.

Tourism & mountain biking

To the east of the village of Cwmcarn is the popular Cwmcarn Forest Drive, a popular seven-mile drive through hills and forests on the flanks of the mountain of Twmbarlwm which is operated by the Forestry Commission. The area has seen significant recent development as the world-class Y Mynydd Mojo Downhill cycling track mountain biking trail is attracting an increased volume of visitors. A new £2 million visitor centre has been opened.

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