Bwlch y Ddwyallt is the name commonly applied to the high point of the plateau of Gwaun Cerrig Llwydion in the eastern part of the Brecon Beacons in south Wales. It is a top of Waun Rydd.[1]
The plateau reaches its highest point of 754m above sea level on its northern rim overlooking the head of Cwm Cwareli. The name is an odd one to apply to a peak since the Welsh word 'bwlch' generally signifies a col or pass between mountains.[2]
The plateau is formed from the hard-wearing sandstones of the Plateau Beds Formation of the Old Red Sandstone laid down during the Devonian period. These beds directly overlie the sandstones of the Brownstones Formation, also of Devonian age, which form the bulk of the hill. The cliffs below Bwlch y Ddwyallt shows signs of having been glaciated during the ice ages as do those beneath Graig Fan Las on the eastern edge of the plateau.[3]
Accessedit
The entire area is classed as open country. The Beacons Way runs along the southern edge of the plateau. Other footpaths skirt the remaining rims of the plateau and connect with neighbouring peaks.
External linksedit
Images of Bwlch y Ddwyallt and surrounding area on the Geograph website
Referencesedit
^Nuttall, John & Anne (1999). The Mountains of England & Wales - Volume 1: Wales (2nd edition ed.). Milnthorpe, Cumbria: Cicerone. ISBN1-85284-304-7.
^Ordnance Survey Explorer map OL12 'Brecon Beacons National Park: western area'
bwlch, ddwyallt, name, commonly, applied, high, point, plateau, gwaun, cerrig, llwydion, eastern, part, brecon, beacons, south, wales, waun, rydd, gwaun, cerrig, llwydionhighest, pointelevation754, prominence18, parent, peakwaun, ryddlistingnuttallcoordinates5. Bwlch y Ddwyallt is the name commonly applied to the high point of the plateau of Gwaun Cerrig Llwydion in the eastern part of the Brecon Beacons in south Wales It is a top of Waun Rydd 1 Bwlch y DdwyalltGwaun Cerrig LlwydionHighest pointElevation754 m 2 474 ft Prominence18 m 59 ft Parent peakWaun RyddListingNuttallCoordinates51 52 26 N 3 22 25 W 51 8739 N 3 3737 W 51 8739 3 3737NamingEnglish translationpass of the two wooded hillsidesbog of the grey rocks for Gwaun Cerrig Llwydion Language of nameWelshGeographyLocationPowys WalesParent rangeBrecon BeaconsOS gridSO012215Topo mapOS Landranger 160The plateau reaches its highest point of 754m above sea level on its northern rim overlooking the head of Cwm Cwareli The name is an odd one to apply to a peak since the Welsh word bwlch generally signifies a col or pass between mountains 2 Contents 1 Geology 2 Access 3 External links 4 ReferencesGeology editThe plateau is formed from the hard wearing sandstones of the Plateau Beds Formation of the Old Red Sandstone laid down during the Devonian period These beds directly overlie the sandstones of the Brownstones Formation also of Devonian age which form the bulk of the hill The cliffs below Bwlch y Ddwyallt shows signs of having been glaciated during the ice ages as do those beneath Graig Fan Las on the eastern edge of the plateau 3 Access editThe entire area is classed as open country The Beacons Way runs along the southern edge of the plateau Other footpaths skirt the remaining rims of the plateau and connect with neighbouring peaks External links editImages of Bwlch y Ddwyallt and surrounding area on the Geograph websiteReferences edit Nuttall John amp Anne 1999 The Mountains of England amp Wales Volume 1 Wales 2nd edition ed Milnthorpe Cumbria Cicerone ISBN 1 85284 304 7 Ordnance Survey Explorer map OL12 Brecon Beacons National Park western area British Geological Survey 1 50 000 map sheet 231 Merthyr Tydfil amp accompanying memoir Retrieved from https en wikipedia org w index php title Bwlch y Ddwyallt amp oldid 1196541960, wikipedia, wiki, book, books, library,