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River Honddu (Monmouthshire)
The River Honddu ( cy, Afon Honddu) (pronounced ''hon-thee'') is a river in the Black Mountains within the Brecon Beacons National Park, southeast Wales. Early recorded versions of the name are of the form ''Hothenei'' and ''hodni'' which are believed to contain the adjective 'hawdd' meaning for example, pleasant or easy. Later forms such as ''Honddye'' have undergone metathesis whereby -ddn- became -ndd-. It rises within the county of Powys near the Gospel Pass at the head of the Vale of Ewyas down which it flows, passing southwards into Monmouthshire to Llanvihangel Crucorney before turning northeastwards to join the River Monnow at the point on the Wales-England border where that river too makes a sudden change of direction. The only significant tributary to join the Honddu is the Nant Bwch though numerous smaller streams flow down the steep sides of the Vale of Ewyas to add to the river's flow. It is likely that the Honddu continued on a southerly course beyond Llanvihang ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Terminal Moraine
A terminal moraine, also called end moraine, is a type of moraine that forms at the terminal (edge) of a glacier, marking its maximum advance. At this point, debris that has accumulated by plucking and abrasion, has been pushed by the front edge of the ice, is driven no further and instead is deposited in an unsorted pile of sediment. Because the glacier acts very much like a conveyor belt, the longer it stays in one place, the greater the amount of material that will be deposited. The moraine is left as the marking point of the terminal extent of the ice. Formation As a glacier moves along its path, the surrounding area is continuously eroding. Loose rock and pieces of bedrock are constantly being picked up and transported with the glacier. Fine sediment and particles are also incorporated into the glacial ice. The accumulation of these rocks and sediment together form what is called glacial till when deposited. Push moraines are formed when a glacier retreats from a previou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Epynt
Mynydd Epynt () is a former community and upland area in Powys, Wales. The Ministry of Defence controversially evicted the community of Mynydd Epynt in 1940, creating what is now the core of the Sennybridge Training Area (SENTA), the largest military training zone in Wales. Etymology The name of the area is often given as Mynydd Eppynt or Eppynt in historical sources and it appears under this spelling in the 1911 ''Encyclopædia Britannica''. ''Mynydd'' is the Welsh word for "mountain" or "upland area" but the meaning of ''Epynt'' is less certain. The most commonly stated etymology is "a pathway for horses", deriving from the P-Celtic root ''epos'', meaning "horse" (as in ''ebol'', meaning "a foal" in Modern Welsh). However, Thomas Morgan suggested the name may be interpreted as a place where "the way (referring to the ancient mountain trackway) rises abruptly", deriving from ''eb-'' ("an issuing out") and ''-hynt'' (a "way" or "course"). A ridge continuing south-west from M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landslide
Landslides, also known as landslips, are several forms of mass wasting that may include a wide range of ground movements, such as rockfalls, deep-seated grade (slope), slope failures, mudflows, and debris flows. Landslides occur in a variety of environments, characterized by either steep or gentle slope gradients, from mountain ranges to coastal cliffs or even underwater, in which case they are called submarine landslides. Gravity is the primary driving force for a landslide to occur, but there are other factors affecting slope stability that produce specific conditions that make a slope prone to failure. In many cases, the landslide is triggered by a specific event (such as a heavy rainfall, an earthquake, a slope cut to build a road, and many others), although this is not always identifiable. Causes Landslides occur when the slope (or a portion of it) undergoes some processes that change its condition from stable to unstable. This is essentially due to a decrease in the She ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cwmyoy
Cwmyoy is an extensive rural parish in Monmouthshire, Wales ( cy, Cwm Iou for the valley and parish, cy, Cwm-iou for the village). The standard Welsh name is ''Cwm Iau'' or ''Cwm-iau''. In the Gwentian dialect of Welsh that was spoken here until the late 1800s, the name was pronounced as ''Cwm Iou'' ('ou', also spelt informally 'oi', for standard 'au' is a common feature of south Wales Welsh). The 'English' name is in fact this local dialect form in a more English spelling. The name of the valley probably originates from the Welsh word ''iau'' meaning yoke, in reference to the shape of the hill surrounding it. The village of Cwmyoy is north of Abergavenny and south of Llanthony in the Vale of Ewyas in the Black Mountains. It is within the Brecon Beacons National Park, in an upland location just below the broad ridge of Hatterrall Hill, which carries the Wales–England border and Offa's Dyke Path. The parish The parish is nearly long and broad, and includes Llanthony as wel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Llanthony Priory
Llanthony Priory ( cy, Priordy Llanddewi Nant Hodni) is a partly ruined former Augustinian priory in the secluded Vale of Ewyas, a steep-sided once-glaciated valley within the Black Mountains area of the Brecon Beacons National Park in Monmouthshire, south east Wales. It lies seven miles north of Abergavenny on an old road to Hay-on-Wye at Llanthony. The priory ruins lie to the west of the prominent Hatterrall Ridge, a limb of the Black mountains. The main ruins are under the care of Cadw and entrance is free. The priory is a Grade I listed building as of 1 September 1956. Within the precincts of the Priory are three other buildings with Grade I listed status: the Abbey Hotel, listed on 1 September 1956; St David's Church, listed on the same date, and Court Farm Barn, listed on 9 January in the same year. History Foundation The priory dates back to around the year 1100, when one of Hugh de Lacy's knights called William reputedly came upon a ruined chapel of St. David in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial Till
image:Geschiebemergel.JPG, Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as ''matrix support'', is diagnostic of till. image:Glacial till exposed in roadcut-750px.jpg, Glacial till with tufts of grass Till or glacial till is unsorted glacier, glacial sediment. Till is derived from the erosion and entrainment of material by the moving ice of a glacier. It is deposited some distance down-ice to form terminal, lateral, medial and ground moraines. Till is classified into primary deposits, laid down directly by glaciers, and secondary deposits, reworked by fluvial transport and other processes. Description Till is a form of '' glacial drift'', which is rock material transported by a glacier and deposited directly from the ice or from running water emerging from the ice. It is distinguished from other forms of drift in that it is depos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Wye
The River Wye (; cy, Afon Gwy ) is the Longest rivers of the United Kingdom, fourth-longest river in the UK, stretching some from its source on Plynlimon in mid Wales to the Severn estuary. For much of its length the river forms part of Wales-England border, the border between England and Wales. The Wye Valley (lower part) is designated an Area of Outstanding Natural Beauty. The Wye is important for nature conservation and recreation, but is severely affected by pollution. Etymology The meaning of the river's name is not clear. Possibly the earliest reference to the name is ''Guoy'' in Nennius' early 9th Century ''Historia Brittonum'' and the modern Welsh language, Welsh name is ''Gwy''. The Wye was much later given a Latin name, ''Vaga'', an adjective meaning 'wandering'. The Tithe maps, Tithe map references a Vagas Field in both Whitchurch and Chepstow. Philologists such as Edward Lye and Joseph Bosworth in the 18th and early 19th centuries suggested an Old English derivat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Misfit Stream
A misfit stream is a river that is either too large or too small to have eroded the valley or cave passage in which it flows. This term is also used for a stream or river with meanders that obviously are not proportional in size to the meanders of the valley or meander scars cut into its valley walls. If the misfit stream is too large for either its valley or meanders, it is known as an overfit stream. If the misfit stream is too small for either its valley or meanders, it is known as an underfit stream.Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, J.A., eds. (2005) ''Glossary of Geology'' (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. Dury, G. H. (1964) ''Subsurface Exploration and Chronology of Underfit Streams.'' Professional Paper no. 452-A. U.S. Geological Survey, Reston, Virginia. The term misfit stream is often incorrectly used as a synonym for an underfit stream. An underfit stream is a type of misfit stream whose discharge is too small to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hereford
Hereford () is a cathedral city, civil parish and the county town of Herefordshire, England. It lies on the River Wye, approximately east of the border with Wales, south-west of Worcester and north-west of Gloucester. With a population of 53,112 in 2021 it is by far the largest settlement in Herefordshire. An early town charter from 1189, granted by Richard I of England, describes it as "Hereford in Wales". Hereford has been recognised as a city since time immemorial, with the status being reconfirmed as recently as October 2000. It is now known chiefly as a trading centre for a wider agricultural and rural area. Products from Hereford include cider, beer, leather goods, nickel alloys, poultry, chemicals and sausage rolls, as well as the famous Hereford breed of cattle. Toponymy The Herefordshire edition of Cambridge County Geographies states "a Welsh derivation of Hereford is more probable than a Saxon one" but the name "Hereford" is also said to come from the Angl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sugar Loaf Mountain (Wales)
Sugar Loaf, sometimes called The Sugar Loaf ( cy, Mynydd Pen-y-fâl or ), is a hill situated north-west of Abergavenny in Monmouthshire, Wales and sits within the Brecon Beacons National Park. It is the southernmost of the summit peaks of the Black Mountains, with a height of 1,955 feet (596 metres). Sugar Loaf was gifted to the National Trust by suffragette Lady Rhondda. Name The original Welsh name of the hill appears to have been Mynydd Pen-y-fâl. Translated into English, this name means 'mountain of the head/top of the peak/summit' from ''mynydd'', ''pen'' and ''bâl''. The name Sugar Loaf has been popularly applied to numerous hills which have a perceived resemblance to a sugarloaf; the nearest other such hill is the Sugar Loaf, Carmarthenshire. Prehistory A southern foothill of Sugar Loaf, ''Y Graig'', was discovered in the 1990s to be the site of prehistoric flint tools dating from the Mesolithic, Neolithic and Bronze Ages. Geology It is a popular m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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