Gorge paths and ironworks
Clydach
A steep wooded gorge where waterfalls, ancient beech woods and the remains of heavy industry sit side by side.
- Best for
- Industrial ruins and wooded-gorge walks
- Give it
- About 90 minutes for either official 5 km circuit
- Don't miss
- Clydach Ironworks and its picnic area
The Fox verdict
Industrial history reclaimed by woodland
Clydach combines ironworking remains, old transport routes and the shaded landscape of the River Clydach gorge.
The ironworks ruins anchor a visit, while two official circular trails connect former tramroad inclines, quarry workings, railway structures and ancient beech woods. St Elli adds a separate layer of church and ironworks history on the hillside above Clydach and Gilwern.
Where to go
Places in Clydach
Every place below is checked against a published source, listed with what it is and how long to give it.
Local signatures
3 placesClydach Ironworks and Picnic Site
Ruins of an ironworks founded between 1793 and 1795, with four blast furnaces, a cast-iron waterwheel and a pre-1811 counterbalanced incline in its recorded history.
- Visit length
- Editorial estimate: Allow around 60 minutes
- Locality
- Clydach
- Access
- Entry and parking are free, and there is a picnic area.
Corridor to the Past
A circuit climbing a steep tramroad incline to Llanelly Quarry before following National Cycle Network Route 46 past tunnel mouths, the former station, a curved railway viaduct, double-arched limekilns and unusual thin houses.
- Visit length
- Editorial estimate: Allow around 90 minutes
- Locality
- Clydach South car park
Clydach Recreation Ground
A council-recorded play area, Clydach AFC sports pitch and recreation ground.
- Visit length
- Editorial estimate: Allow around 45 minutes
- Locality
- Clydach Recreation Ground
- Access
- Dogs are excluded from the play area and sports pitch and must be on leads on the recreation ground.
Walks & outdoors
2 placesPuck's Valley / Cwm Pwca Treasure Trail
A family-suitable circuit linking Smart's Bridge, the ironworks, Cwm Pwca, former tramroad inclines, ancient beech woods, Llanelly Quarry, the old railway track bed and Devil's Bridge.
- Visit length
- Editorial estimate: Allow around 90 minutes
- Locality
- Clydach South car park
- Access
- Stout footwear is advised.
Clydach Gorge
A steep wooded gorge where waterfalls create shaded conditions for mosses, lichens and ferns; part of the gorge is a National Nature Reserve important for woods, birds and bats.
- Visit length
- Editorial estimate: Allow around 60 minutes
- Locality
- Clydach Gorge
History & heritage
1 placeParish Church of St Elli, Llanelly
An active Grade II* Church in Wales parish church with a probably 12th-century font, a 15th-century aisle roof and a Whitefriars east window showing the Good Shepherd with Sugar Loaf and the Blorenge.
- Visit length
- Editorial estimate: Allow around 45 minutes
- Locality
- the hillside above Clydach and Gilwern
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Three ways to explore Clydach
Signature outings
Ironworks in the gorge
See the remains of an ironworks founded between 1793 and 1795, whose four blast furnaces were built from 1793 to 1844.
Puck's Valley circuit
Follow a family-suitable 5 km circuit through ancient beech woods, past Smart's Bridge, the ironworks, Llanelly Quarry and Devil's Bridge.
St Elli's broach spire
The active Grade II* parish church has a broach spire added in 1897 and a probably 12th-century rough-bowled font.
The village story
Clydach Village Guide
From a traditional inn to wooded-gorge paths, ironworks ruins, St Elli and a final railway story.
Pub life and the wooded gorge
The Cambrian Inn sits on Lower Station Road, near the former Clydach railway station. Inside there is a log-burning stove, a games room and a pool table, and the beer changes: two cask ales at a time, usually from Tudor. The current owners bought it at auction and kept the place much as it was. There is a Thursday quiz, a walking club, and the occasional beer or wine tasting. Dogs are welcome if they behave, there is a garden and parking, and the Wi-Fi works.
Step outside and the village explains itself. Clydach fills a steep, wooded gorge where the River Clydach comes down off Mynydd Llangattock towards the Usk. Waterfalls throw spray into deep shade, which suits the mosses, lichens and ferns, and beech, oak, birch and ash have grown back over what was once heavy industry. Part of the gorge is now a National Nature Reserve, valued for its woods, its birds and its bats.
Ironworks and tramroad trails
The industry is still here, in ruins. Clydach Ironworks was founded in the 1790s, and by 1841 it employed 1,350 people, day and night. Four blast furnaces went up between 1793 and the 1840s, fed by a Boulton and Watt engine and a cast-iron waterwheel forty-two feet across, with a counterbalanced incline hauling pig iron up the slope. The works closed in the 1860s, but limestone quarrying carried on for another hundred years and left the raw cliffs at the head of the valley. The official trail through the site calls what remains "romantic and peaceful ruins." Entry is free, so is the parking, and there is a picnic area.
Two waymarked walks start from the Clydach South car park, each about three miles and an hour and a half. Puck's Valley takes you past Smart's Bridge, which carried a tramroad over the river from 1824, up old tramroad inclines through ancient beech woods to Llanelly Quarry and Devil's Bridge. The Corridor to the Past climbs to the quarry and then follows National Cycle Network Route 46 past tunnel mouths, the old station, a curved viaduct, double-arched limekilns and a row of unusually narrow houses. The Crawshay Bailey Trail is here too. Local interpretation claims Shakespeare heard tales of the shape-shifting Pwca in these woods and wrote A Midsummer Night's Dream; the trail files it under "myth or reality."
St Elli above the gorge
Above Clydach and Gilwern, the parish church of St Elli keeps a broach spire added in 1897 and a rough-bowled font that is probably 12th century. Its Whitefriars east window shows the Good Shepherd against the Sugar Loaf and the Blorenge, and there is a monument to John Powell, who ran the ironworks. Some churchyard slabs are held up by iron supports that were most likely made at the works themselves.
Road, rail and bus connections
Clydach is directly off the A465 between Abergavenny and Brynmawr, with brown signs to the ironworks car park. Abergavenny is the rail gateway, on the Welsh Marches line and step-free throughout, with its bus station about ten minutes' walk from the trains. The Newport Bus A3 links Clydach South with Brynmawr, Gilwern, Abergavenny and Raglan, though not on Sundays.
The last train through Clydach
There is a story locals tell about the railway, which ran on one of the steepest gradients in Britain and held its downhill trains to twenty-five miles an hour. As the last train of the day came through the gorge, people would flick their kitchen and bedroom lights on and off to see it past.
Stay around Brecon Beacons
Make a longer stay of it
Travel Fox holiday homes around Brecon Beacons, linked directly to their property pages.
A guide with a point of view
Written from research. Edited for real journeys.
Use the Official site links for live practical details, then use this guide for context, ideas and room to explore.
Sources
Every place on this page is checked against a published source. Each entry links the record we used and names who publishes it.
- Clydach Ironworks and Picnic Site — visitmonmouthshire.com operator, sector body or destination organisation
- Puck's Valley / Cwm Pwca Treasure Trail — visitblaenavon.co.uk operator, sector body or destination organisation
- Corridor to the Past — visitblaenavon.co.uk operator, sector body or destination organisation
- Parish Church of St Elli, Llanelly — catwg.org.uk other published source
- Clydach Recreation Ground — monmouthshire.gov.uk statutory register or public authority
- Clydach Gorge — visitmonmouthshire.com operator, sector body or destination organisation