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25-705: Several streams draining the eastern slopes of Fan Nedd and the western slopes of Fan Dringarth in the Fforest Fawr section of the national park meet to form the river, which then flows southwards for 5 kilometres (3.1 mi) to its confluence with the Afon Dringarth , the combined waters continuing south as the Afon Mellte . The name probably derives from the Welsh root lly– found in llyfu, llyo ('lick, lap') but it has probably been influenced by

50-658: A Management Group meets quarterly to consider strategy and project work. Both the Board and the Group derive their membership from a wide cross-section of interests with a stake in the success of the Geopark. These interests include but are not restricted to: The Geopark comprises the western half the Brecon Beacons National Park in southern Wales . At its heart are the mountain massifs of Fforest Fawr ,

75-623: A small glacier in the last ice age. A prominent modern cairn marks the northern end of the plateau whilst a couple of ancient cairns are to be found on its eastern slopes. The hill is drained to the west by a number of streams running into the Nedd Fechan river whilst to the east, rainwater spills into the upper reaches of the Afon Llia . Both ultimately drain via the River Neath to the sea at Swansea Bay . Its northern face overlooks

100-531: Is a mountain in the Fforest Fawr area of the Brecon Beacons National Park in Wales . In common with the rest of the Fforest Fawr uplands it is within the county of Powys . The hill is in the form of a broad flat-topped ridge whose summit lies at 663 m (2175 ft) and is crowned by a trig point . Its southern ridge is the least steep whereas its northern aspect is steep and craggy, having hosted

125-739: Is dedicated to the Geopark and the Geopark’s Waterfalls Centre was staffed by two information assistants from summer 2007 until June 2016. The Geopark hosted a meeting of the European Geoparks Network in Brecon in spring 2011. Together with the United Kingdom 's six other geoparks, Fforest Fawr Georpark was formally recognised by UNESCO in December 2015. In common with other European Geoparks, Fforest Fawr

150-477: Is for the most part concealed beneath a blanket of glacial till and hill peat . Only on its northern face is rock exposed to any significant degree. The hill is within the Fforest Fawr Geopark designated in 2005 in recognition of the area's geological heritage. The entire hill is designated as open country so walkers may wander at will though most prefer to follow a path which skirts the rim of

175-592: Is reassessed on a four yearly (previously three yearly) cycle. A successful revalidation took place in 2008 after an initial three-year period of membership of the EGN with another in 2012. It was reassessed again in 2016. Fforest Fawr Geopark is run by a partnership of several organisations, the principal ones being Brecon Beacons National Park Authority, Cardiff University and the British Geological Survey . A Partnership Board meets annually whilst

200-699: The Black Mountain (Welsh: 'Y Mynydd Du') and the central Brecon Beacons . The designated area includes the surrounding lowlands; principally parts of the Usk , Towy , Tawe and Taf valleys. Rocks from the Ordovician Period through to the Carboniferous outcrop in various parts of the Geopark. The oldest (of late Ordovician age) occur in the northwest whilst the youngest (of late Carboniferous age) occur along its southern margins. Many of

225-665: The European Geoparks Network and the UNESCO -assisted Global Network of National Geoparks in October 2005. The Geopark aims to promote and support sustainable tourism and other opportunities to improve the economy of the area whilst safeguarding the natural environment. Its aims largely coincide with the statutory duties and purpose of the National Park within which it sits. An initial application to

250-524: The Old Red Sandstone escarpment which stretches from Llandeilo east to Abergavenny . The presence of a standing stone , Maen Llia , presumed to date from the Bronze Age near the valley head suggests that it has been used as an ancient trackway route for several thousand years. The Romans constructed a Roman road , Sarn Helen , between Neath and Brecon through this valley and

275-571: The Quaternary period . Glacial till covers large parts of the landscape whilst recessional moraines occur within the major valleys of the Geopark and late-glacial moraines form striking features beneath the main north and north-east facing scarps of the mountains. Both moraines and glacial lakes are visible at the foot of the spectacular north face of the Black Mountain (range), especially Llyn y Fan Fach and Llyn y Fan Fawr below

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300-742: The Swansea to Brecon turnpike was pushed through here in the 19th century. The remains of "Castell Coch" (the "red castle") sit in the fork between the Llia and the neighbouring Afon Dringarth. There is a car park and picnic area provided by the Natural Resources Wales at Blaen Llia beside the river which provides a useful base for walkers wanting to explore the river, its valley and the adjacent peaks. 51°49′04″N 3°32′46″W  /  51.81778°N 3.54611°W  / 51.81778; -3.54611 Fan Nedd Fan Nedd

325-552: The European Geoparks Network (EGN) made for a more geographically restricted Geopark based on the upper Swansea Valley was turned down in 2003 but the present area which extends to 300 square miles (777 km ) was accepted by the EGN at their meeting in October 2005. A Geopark Development Officer was appointed in January 2007 whilst the National Park Authority also employs an education officer part of whose time

350-528: The Geopark. The industrial archaeology of the Geopark is outstanding as the Industrial Revolution shifted into gear in the late eighteenth and early nineteenth centuries making South Wales one of the earliest industrialised societies in the world. Limekilns dot the hillsides wherever limestone puts in an appearance and tramways for conveying both raw materials and finished products are plentiful. The ambitious Brecon Forest Tramroad scheme

375-602: The Ordovician and Silurian age sandstones and mudstones were faulted and tightly folded during the Caledonian Orogeny . The overlying Devonian and Carboniferous age sandstones (e.g. Twrch Sandstone ), mudstones and limestones have generally been tilted gently to the south and southwest towards the main South Wales Coalfield basin. The area was subject to repeated glaciation during

400-573: The area are closely related to one another. The Old Red Sandstone (ORS) forms the principal summits which have attracted walkers to the area for decades. Walks on Pen y Fan and Corn Du and over the Carmarthen Fans / Brecon Beacons are amongst the most popular. Carboniferous Limestone forms an east-west belt of country to the south of the ORS which sports some of the country’s longest and deepest cave networks such as Ogof Ffynnon Ddu and

425-653: The deep glacial hollow of Blaen Senni drained by the Afon Senni , a tributary of the River Usk . The hill presumably takes its name from that of the river. The hill is formed largely from sandstones of the Brownstones Formation of the Old Red Sandstone dating from the Devonian period . Sandstones of the overlying Plateau Beds Formation extend some way up the southern slopes of the hill though bedrock

450-520: The impressive Porth yr Ogof into which the Afon Mellte flows. Further south again is a Millstone Grit landscape, the most visited part of which is Waterfall Country which boasts the finest collection of waterfalls in the UK . Bronze Age standing stones , round barrows and stone circles , Iron Age , hillforts and mediaeval castles all feature with Maen Llia , Carn Goch and Carreg Cennen Castle being outstanding examples of each to be found in

475-451: The local pronunciation of lleiaf ('smallest'). The river flows over ground formed from Old Red Sandstone rocks laid down during the Devonian period . The valley was inundated by ice during the last glacial period as evidenced by the low mounds of moraine present in the valley and through which the river has since cut. The valley of the Llia provides one of the lower passes—summit height 446 metres (1,463 ft)—through

500-473: The most impressive of which occur where a relatively thin cover of the younger Twrch Sandstone overlies the limestone. The limestone has been extensively worked in the past and numerous abandoned small quarries are scattered across the outcrops of the Old Red Sandstone which has been worked for building and roofing stone. Quarries in the Twrch Sandstone yielded a very pure silica which when crushed,

525-451: The steep northern face between Bwlch y Duwynt to the west and the minor road between the villages of Ystradfellte and Heol Senni to the east. Fforest Fawr Geopark 51°56′13″N 3°19′16″W  /  51.937°N 3.321°W  / 51.937; -3.321 Fforest Fawr Geopark is a Geopark in the Brecon Beacons National Park , south Wales . It is the first designated Geopark in Wales having gained membership of both

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550-454: The summits of Picws Du and Fan Foel . Numerous landslips have occurred in the post-glacial period in both bedrock and superficial deposits, though these are no longer active. Karstic landforms are characteristic of the belt of limestone which runs east-west through the Geopark and include some of Britain's most extensive cave networks including its deepest ( Ogof Ffynnon Ddu at 293.5 m (963 ft) and large numbers of shakeholes ,

575-633: The various partner organisations contributing their expertise. There is a fortnight long Geopark Festival which takes place at the end of May/start of June coinciding with similar events in Geoparks across Europe. A major display on the geology , history and culture in the Geopark area was opened at the Waterfalls Centre in Pontneddfechan in summer 2008, remaining until the centre's closure in 2016. Other exhibitions on aspects of

600-487: Was one of the earliest and longest tramway systems in the world. Tramways also served the silica rock mines and quarries, notably around Dinas Rock and the gorge of the Nedd Fechan at Pontneddfechan . Many of these sites are interpreted for the visitor, others are left for the enthusiast to discover. Since its designation, Fforest Fawr Geopark has organised events for the public including walks and talks with National Park wardens, volunteer walk leaders and experts from

625-424: Was specially suitable for the manufacture of firebricks . Sub-tropically weathered occurrences of this rock appear as soft sand deposits ('silica sand') which were worked for a similar purpose. The Geopark celebrates the geological and wider natural heritage of the area together with the cultural heritage relating to 7000 years of recorded human occupation of the area since the last ice age. Each of these aspects of

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