Ogof Craig a Ffynnon

Cwm Clydach National Nature Reserve is a 24.8 hectares (61 acres) area of steeply sloping valley-side on Clydach Gorge, 2 miles (3.2 km) east of Brynmawr, southeast Wales. It is protected for its ancient semi-natural beech woods, designated by the Nature Conservancy Council (now managed by its successor authority Natural Resources Wales).The reserve is a part of the Cwm Clydach site of special scientific interest (SSSI) and of the Cwm Clydach Woodlands/Coedydd Cwm Clydach special area of conservation (SAC).There is good public access to much of the reserve through a network of public footpaths, a section of the national cycleway and by public roads. Interpretive panels at access points to the reserve provide maps of the reserve and information.

The River Clydach is a short, steep and fast-flowing river in Monmouthshire and the county borough of Blaenau Gwent in south Wales. It lies within the Brecon Beacons National Park. It is around 10 kilometres (6 mi) in length. The river rises on the southern slopes of Mynydd Llangatwg (51.8122°N 3.1939°W / 51.8122; -3.1939 (River Clydach, source)) then heads south-east through Clydach Dingle past Brynmawr. It then enters the spectacular Clydach Gorge, dropping about 300 metres (1,000 ft) to Gilwern and its confluence with the River Usk (51.8329°N 3.1007°W / 51.8329; -3.1007 (River Clydach, mouth))."Clydach" is a common name for watercourses in south Wales and is thought to derive from an old Welsh word for "swift" or possibly "stoney", both of which would apply in this case.

Clydach is a village in Monmouthshire, Wales. Its nearest neighbours are the village of Gilwern and town of Abergavenny.

Gelli Felen Halt railway station was a station on the London and North Western Railway's Heads of the Valleys line near the settlement of Gellifelin in the Welsh county of Monmouthshire.

The Clydach Gorge (also known as Cwm Clydach) is a steep-sided valley in south-east Wales down which the River Clydach flows to the River Usk. It runs for 5.6 kilometres (3.5 mi) from the vicinity of Brynmawr in Blaenau Gwent eastwards and northeastwards to Gilwern in Monmouthshire. The Gorge was one of the first locations in the region to be industrialised though it still retains its natural environment. It has long been an important transport corridor between Abergavenny and the lowlands of Monmouthshire and the northeastern quarter of the South Wales Coalfield. It is now exploited by the A465 Heads of the Valleys trunk road which runs between Abergavenny and Swansea and which serves the Heads of the Valleys sub-region. The Gorge is included within the Brecon Beacons National Park and is a tourist destination in its own right, with facilities including a picnic site, waymarked footpaths, the National Cycle Network and car parking alongside the River Clydach, easily reached from the Heads of the Valleys Road. It includes Smart's Bridge, a cast iron bridge and the remains of a late 18th-century ironworks which are now a Scheduled Ancient Monument. There are also limeworks.

Smart's Bridge, Llanelly, Monmouthshire, is a cast-iron bridge situated in Clydach Gorge. Constructed in 1824, it gave access to the Clydach Ironworks, the most significant industrial enterprise in the gorge. The bridge was designated a Grade II* listed structure in 2000.

Waenavon railway station, also known as Waen Avon, was a station on the Brynmawr and Blaenavon Railway in South East Wales. To the south of the station a short line served Milfraen Colliery. At an altitude of 1,392 feet (424 m) above sea level, Waenavon was the highest railway station on a standard gauge line in Wales. It was the highest on the London, Midland and Scottish Railway following the closure of Leadhills in 1939.

Clydach railway station was a station on the London and North Western Railway's Heads of the Valleys line near the village of Clydach in the Welsh county of Brecknockshire.

Ty Uchaf Farmhouse, Llanelly, Monmouthshire is a farmhouse in the west of the county dating from the early 17th century. Located 0.5km north-west of the Church of St Elli, it is a Grade II* listed building.

Clydach House, Llanelly, Monmouthshire is a house dating from 1693. Constructed as the home for the manager of an ironworks in the nearby Clydach Gorge, it remains a private residence and is a Grade II* listed building.

Llanelly (Welsh: Llanelli) is the name of a parish and coterminous community in the principal area of Monmouthshire, within the historic boundaries of Brecknockshire, south-east Wales. It roughly covers the area of the Clydach Gorge. The population of the parish and ward at the 2011 census was 3,899.

The Church of St Elli, Llanelly, Monmouthshire, Wales, is a parish church with its origins in the 14th century. The church underwent three major restorations, in 1867–1868, 1897 and 1910–1911. It remains an active parish church and is a Grade II* listed building. The church is dedicated to the 6th-century Saint Elli, who may have been a daughter or granddaughter of King Brychan, or a male disciple of Saint Cadoc.