Craig y Cilau is a limestone escarpment in the Brecon Beacons National Park in Powys, Wales. The name translates from Welsh as crag of the nooks.
It was declared a national nature reserve in 1959 because of its importance for wildlife, particularly plants. It is situated on the north side of Mynydd Llangatwg in Llangattock community, about 2 miles (3.2 km) south-west of Crickhowell. The site was identified as early as 1915 by the Society for the Promotion of Nature Reserves as one of just under 300 wildlife sites in Britain and Ireland worthy of protection. [1]
The reserve covers 157 acres (0.64 km2) and has a varied geology with Old Red Sandstone below the cliffs and Twrch Sandstone above them. The range of habitats is equally wide with woodland and scrub in the lower parts and moorland higher up. There are numerous caves and disused quarries along the escarpment.
The limestone cliffs are home to many scarce plants including angular solomon’s-seal ( Polygonatum odoratum ), hutchinsia ( Hornungia petraea ) and the most southerly British population of alpine enchanter's nightshade ( Circaea alpina ). Five species of whitebeam occur including the narrow-leaved whitebeam (Sorbus leptophylla) and lesser whitebeam (Sorbus minima) which are endemic to Wales.
About 50 species of bird breed on the reserve including ring ouzel and raven on the cliffs and redstart, wood warbler and pied flycatcher in the woods. One of the caves, Agen Allwedd, holds a roost of lesser horseshoe bats during the winter months.
Cheddar Gorge is a limestone gorge in the Mendip Hills, near the village of Cheddar, Somerset, England. The gorge is the site of the Cheddar show caves, where Britain's oldest complete human skeleton, Cheddar Man, estimated to be 9,000 years old, was found in 1903. Older remains from the Upper Late Palaeolithic era have been found. The caves, produced by the activity of an underground river, contain stalactites and stalagmites. The gorge is part of a Site of Special Scientific Interest called Cheddar Complex.
Leigh Woods is a 2-square-kilometre (0.77 sq mi) area of woodland on the south-west side of the Avon Gorge, close to the Clifton Suspension Bridge, within North Somerset opposite the English city of Bristol and north of the Ashton Court estate, of which it formed a part. Stokeleigh Camp, a hillfort thought to have been occupied from the third century BC to the first century AD and possibly also in the Middle Ages, lies within the reserve on the edge of the Nightingale Valley. On the bank of the Avon, within the reserve, are quarries for limestone and celestine which were worked in the 18th and 19th centuries are now derelict.
Horseshoe Bend, Shirehampton is an 11 acre biological Site of Special Scientific Interest in Bristol, England, on the north bank of a lower, tidal stretch of the River Avon, 1.9 miles downstream from the Avon Gorge, and just east of Shirehampton. It was notified as an SSSI in 1999.
Aller and Beer Woods is a 56.9 hectares biological Site of Special Scientific Interest. off the A372 Othery to Langport road near Aller in Somerset. It was notified in 1952.
The Wye Valley is a valley in Wales and England. The River Wye is the fourth-longest river in the United Kingdom.
Ogof y Daren Cilau is a cave system in the limestone escarpment on Mynydd Llangatwg, which is south of Llangattock village and above Crickhowell in south Powys, Wales. The escarpment is the remnant of quarrying that had begun by the mid-18th century and initially provided limestone for building and agriculture as a fertiliser, and subsequently for the blast furnaces of the local ironworks as a flux. The cave system was discovered in 1957 and is one of the longest in the United Kingdom. The system is next to the Ogof Agen Allwedd system.
Sorbus leyana. Ley's whitebeam is a species of small tree which is endemic to two sites in southern Wales. It is thought to have arisen by hybridisation of two species of Sorbus, one of which was the rowan. Its closest relatives are some of the other hybrid derived Sorbus species found in Britain.
Sorbus minima, commonly known as the lesser whitebeam or least whitebeam, is a shrub belonging to the subgenus Aria (whitebeams) in the genus Sorbus. It is endemic to Wales where it grows at a few sites in the traditional county of Breconshire, a part of modern Powys. It is an apomictic microspecies which reproduces asexually and so is reproductively isolated from its close relatives such as the Swedish whitebeam, S. intermedia. It probably originated as a hybrid between the rock whitebeam and the rowan. It was first discovered in 1893 by Augustin Ley, the vicar of Sellack in Herefordshire who travelled widely in Wales.
Mynydd Llangatwg or Llangattock Mountain is a hill in the Brecon Beacons National Park mostly in the county of Powys, south Wales but also extending into both Monmouthshire and Blaenau Gwent. It is named from the village of Llangatwg which sits in the valley of the River Usk to the north of it. It is essentially an undulating plateau rising in the west to a height of 530 metres (1,740 ft) at grid reference SO171157 and in the east to a height of 529 metres (1,736 ft) at Hen Dy-aderyn / Twr Pen-cyrn. This latter spot is marked by a trig point. The shallow pool of Pwll Gwy-rhoc sits in a broad depression towards the northern edge of the plateau whilst a smaller pool frequently occupies a large shakehole a few hundred metres to its west. The hill forms an impressive northern scarp overlooking the Usk valley and commonly referred to as the Llangattock Escarpment. Its southern margins are more subdued. Its eastern end is defined by the drops into the Clydach Gorge. Beyond the B4560 to the west the hill merges with Mynydd Llangynidr which has a similar character.
Cefn Cil Sanws is a hill in the Brecon Beacons National Park within Merthyr Tydfil County Borough in south Wales. The summit at 460m above sea level is crowned by a trig point. The steep cliffs of Darren Fawr and Darren Fach defend its western side which drops down into Cwm Taf. A major limestone quarry is worked on the southeastern side of the hill. An unexpected feature at this altitude is Merthyr Tydfil Golf Course which extends high onto the eastern and southern slopes of the hill.
Penmoelallt or Onllwyn is a hill in the northern part of the county borough of Rhondda Cynon Taff in south Wales. It lies within the Brecon Beacons National Park and Fforest Fawr Geopark. To its east lies the deep valley of Cwm Taf and to its north a rather shallower valley in which the Nant Cadlan originates. To the west is the hill known as Mynydd-y-glog and to the south are slopes draining into the River Taff and the Afon Cynon. The hill culminates in a broken plateau with several knolls rising above the 420m contour. Its afforested nature makes it difficult to determine the precise location of its highest point but this probably lies somewhere around OS grid ref SO 003096. Older maps indicate a spot height of 1376 ft above sea level at SO 000090.
Llangattock is a village, community and electoral ward in the Brecon Beacons National Park in Powys, Wales. It lies in the Usk Valley just across the river from the town of Crickhowell. The Monmouthshire and Brecon Canal passes through the village en route between Brecon and Pontypool. It is in the historic county of Breconshire.
Carmel National Nature Reserve lies close to the village of Carmel in Carmarthenshire. It lies south of Llandeilo not far from the main road to Llanelli. There is a small car park and picnic site for visitors, and footpaths for access. There is an explanatory notice board at the car park. The site is managed by the Wildlife Trust of South and West Wales and Natural Resources Wales (NRW).
Lower Wye Gorge is a 65-hectare (160-acre) biological and geological Site of Special Scientific Interest in Gloucestershire, notified in 1954 and renotified 1987. The site includes two Gloucestershire Wildlife Trust nature reserves being Ban-y-gor Wood and Lancaut. The Natural England citation states a revision for Lancaut inclusion.
Upper Wye Gorge is a Site of Special Scientific Interest (SSSI), noted for its biological and geological characteristics, around Symonds Yat in the Wye Valley on the Wales–England border. The site is listed in the "Forest of Dean Local Plan Review" as a Key Wildlife Site (KWS).
Libby Houston is an English poet and botanist. The native of North London has published several collections of poetry. Houston, a research associate at the School of Biological Sciences at the University of Bristol, has discovered several new species of whitebeam (Sorbus), one of which has been given her name. In addition to membership in several organisations related to botany, Houston is a participant in the Avon Gorge & Downs Wildlife Project. She was the recipient of the H. H. Bloomer medal in 2012. The award from the Linnean Society of London acknowledged her contribution to natural history, in particular, the body of knowledge of whitebeams in Britain, and the flora of Avon Gorge in Bristol, England. In 2018, she was recipient of the Marsh Botany Award, in recognition of lifetime achievement in the field.
Karpatiosorbus houstoniae, or Houston's whitebeam, is a hybrid of two deciduous trees: the common whitebeam and the Bristol whitebeam. Only a single example of the hybrid is known to exist, at the Avon Gorge in Bristol, England. The only specimen grows on a cliff below Stokeleigh Camp at Leigh Woods in North Somerset and cannot be accessed without ropes.
Poor's Allotment is a 28.57-hectare (70.6-acre) biological Site of Special Scientific Interest in Gloucestershire, notified in 1954. The site is listed in the 'Forest of Dean Local Plan Review' as a Key Wildlife Site (KWS).
Belsize Wood is a 0.7 hectare Local Nature Reserve and a Site of Borough Importance for Nature Conservation, Grade II, in Belsize Park in the London Borough of Camden. It is a steeply sloping site divided into a northern half, which is always open to the public and is of lesser ecological value, and a southern part which is in a better state of conservation, and which is only open at weekends. The two halves are separated by a public footpath between Lawn Road and Aspern Grove. The site is owned and managed by Camden Council.
Sorbus arvonensis, called the Menai Strait whitebeam or Cerddin Menai, is a whitebeam species in the rose family. It is native to a restricted area along the shore of the Menai Strait in North Wales. The species was first described by Sell (2014) and has been assessed as Critically Endangered.
51°50′15″N3°10′54″W / 51.8374°N 3.1816°W