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'{{Infobox mountain | name = Waun Lefrith | photo = Waunlefrith.JPG | photo_caption = Waun Lefrith from [[Picws Du]] | elevation_m = 677 | elevation_ref = | prominence_m = 15 | parent_peak = [[Picws Du]] | listing = [[Nuttall (hill)|Nuttall]] | translation = milk bog | language = [[Welsh language|Welsh]] | location = [[Carmarthenshire]], [[Wales]] | range = [[Brecon Beacons]] | coordinates = {{coord|51.8796|-3.7492|type:mountain_region:GB|display=inline,title}} | grid_ref_UK = SN825217 | topo = | easiest_route = }} '''Waun Lefrith''' is a top of [[Picws Du]] and is also the westernmost of the '''Carmarthen Fans''' or '''Bannau Sir Gaer''', a group of peaks within the [[Black Mountain (range)|Black Mountain]] ('''Y Mynydd Du''') of the [[Brecon Beacons National Park]] ('''Parc Cenedlaethol Bannau Brycheiniog'''). It lies within [[Carmarthenshire]], [[Wales]]. The summit plateau of the mountain reaches a height of 2221 feet above sea level. [[Picws Du]] and [[Fan Foel]] are the other, higher summits of the Bannau Sir Gaer / Carmarthen Fans.<ref>Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. ISBN 1-85284-304-7.</ref> The [[glacial lake]] of [[Llyn y Fan Fach]] dominates the [[panorama]] to the north of the peak. Beyond the lake to the north lies the [[Usk Reservoir]] and then the [[Cambrian Mountains]] on the horizon. [[Swansea Bay]] and the [[Bristol Channel]] are visible to the south across the undulating [[dip slope]] of the mountain. ==Geology== Waun Lefrith is formed from the sandstones and mudstones of the Brownstones Formation of the [[Old Red Sandstone]] laid down during the [[Devonian period]]. Its southern slopes are formed from the hard-wearing sandstones of the overlying Plateau Beds Formation which are of upper/late Devonian age. It is those rocks which form vertical [[crags]] along the top edge of the scarp. The northern face of Waun Lefrith was home to a glacier during the ice ages which gouged out the [[cirque|cwm]] in which [[Llyn y Fan Fach]] now sits. This empties via the [[Afon Sawdde]] into the [[River Towy]]. The southern slopes drain via the Twrch Fechan, the Nant Menyn and Nant Lluestau into the [[Afon Twrch]] and so into the [[River Tawe]].<ref>British Geological Survey 1:50,000 map sheet 213 'Brecon' & accompanying sheet explanation</ref> Large [[moraine]]s occur to the east of the summit at the base of the scarp, and below the prominent peak of [[Picws Du]] as well as those damming the Lake. ==Access== The entire mountain is open country and so freely accessible to walkers. The most popular path of ascent is that from the car park at the foot of the water board road running steeply up to [[Llyn y Fan Fach]] and over which lake the mountain looms. It lies to the east of the small village of [[Llanddeusant, Carmarthenshire|Llanddeusant]]. However, the road is in very bad condition for car travel, and poorly [[signpost]]ed. The ridge running up to the peak starts at the dam on the lake (where there is a small refuge hut) and rises west up the hill before turning along the edge of the cliff above the lake. The high level route of the [[Beacons Way]] from [[Llangadog]] to [[Abergavenny]] runs over Waun Lefrith whilst the low level route runs along the foot of its northern escarpment to the small [[glacial lake]] of [[Llyn y Fan Fach]]. Most of the upper part of the mountain is covered with [[peat bog]]s, but the footpath is protected at some points by stone pavements. The path follows the edge of the escarpment, giving panoramic views in all directions. The footpath from [[Llanddeusant]] avoids the parallel tarmacked road to the dam, rising along the ridge which leads directly to the summit. ==Wildlife== [[File:Red Kite, Spain.jpg|thumb|right|[[Red kite]] in flight showing distinctive tail feathers]] There are numerous different [[species]] of bird in the area, and they include the [[red kite]], [[common buzzard]], [[kestrel]], [[carrion crow]], [[common raven]] and [[jackdaw]] as well as the [[skylark]], to name a few of the most obvious residents. The kestrel and buzzard are widely distributed, but the raven is restricted to the higher mountains. ==References== {{reflist}} ==External links== * [http://www.geograph.org.uk/search.php?i=4999385 images of Waun Lefrith & surrounding area from Geograph website] [[Category:Nuttalls]] [[Category:Black Mountain, Wales]] [[Category:Mountains and hills of Carmarthenshire]]'