|
Rhiangoll
The Rhiangoll is a river in the Brecon Beacons National Park in Powys, Wales. It rises on the western slopes of Waun Fach, highest point of the Black Mountains (Welsh: Y Mynyddoedd Duon) and drops steeply down to the west into the north–south valley through which the A479 runs between Talgarth and the hamlet of Tretower and through the village of Cwmdu. It is joined by various minor tributary streams on its left bank including the Ffinnant, Nant yr Ychen, Nant-y-fedw and Nantygarreg, all of which rise on the flanks of the ridge extending between the Pen Trumau spur of Waun Fach and Pen Gloch-y-pibwr. Two tributary streams flowing from Mynydd Troed and Mynydd Llangorse enter on its right bank as does Nant Ewyn east of the village of Bwlch. The main valley was excavated by glacial ice during the course of the ice ages as it breached the watershed at Pengenffordd. Its broad lower section was influenced by the merging of the Rhiangoll valley ice with that of the main Usk Valley ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Usk
The River Usk (; cy, Afon Wysg) rises on the northern slopes of the Black Mountain (''y Mynydd Du''), Wales, in the westernmost part of the Brecon Beacons National Park. Initially forming the boundary between Carmarthenshire and Powys, it flows north into Usk Reservoir, then east by Sennybridge to Brecon before turning southeast to flow by Talybont-on-Usk, Crickhowell and Abergavenny after which it takes a more southerly course. Beyond the eponymous town of Usk it passes the Roman legionary fortress of Caerleon to flow through the heart of the city of Newport and into the Severn Estuary at Uskmouth beyond Newport near the Newport Wetlands. The river is about long. The Monmouthshire and Brecon Canal follows the Usk for most of the length of the canal. Etymology The name of the river derives from a Common Brittonic word meaning "abounding in fish" (or possibly "water"), this root also appears in other British river names such as Exe, Axe, Esk and other variants. The nam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Black Mountains, Wales
The Black Mountains ( cy, Y Mynydd Du or sometimes ) are a group of hills spread across parts of Powys and Monmouthshire in southeast Wales, and extending across the England–Wales border into Herefordshire. They are the easternmost of the four ranges of hills that comprise the Brecon Beacons National Park, and are frequently confused with the westernmost, which is known as the Black Mountain. The Black Mountains may be roughly defined as those hills contained within a triangle defined by the towns of Abergavenny in the southeast, Hay-on-Wye in the north and the village of Llangors in the west. Other gateway towns to the Black Mountains include Talgarth and Crickhowell. The range of hills is well known to walkers and ramblers for the ease of access and views from the many ridge trails, such as that on the Black Hill (Herefordshire) at the eastern edge of the massif. The range includes the highest public road in Wales at Gospel Pass, and the highest point in southern England ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
A479 Road (Great Britain)
The A479, officially also known as the Glanusk Park (Crickhowell)—Llyswen Trunk Road, is a trunk road in Wales. It connects Crickhowell to Llyswen via the Rhiangoll valley and Talgarth, running through the Brecon Beacons National Park. Route The road starts at Glanusk Park near Crickhowell and runs roughly in a northerly direction to Llyswen, where it joins the A470 road. It runs entirely within the county of Powys and is a single carriageway throughout its length. From Crickhowell to Talgarth, the road is in the Brecon Beacons National Park, and follows the Rhiangoll valley. The southern end is near Tretower Castle and Court. History The A479 originally ran through Builth Wells to Rhayader. This part of the road is now the A470. A short section of road near Llyswen was realigned in 1995. A bypass of Talgarth and Bronllys began construction in 2006. Part of the Talgarth bypass runs on the former Mid-Wales Railway. Because this part of the road runs through the Brecon Bea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bwlch
Bwlch (meaning ''a pass'' in Welsh) is a small village and an electoral ward in Powys, southern Wales. The settlement is strung out along the A40 road which crosses a low col above the Usk Valley at this point on its route between Brecon and Crickhowell. The village is a part of the administrative community of Llanfihangel Cwmdu with Bwlch and Cathedine. Geography The village is situated about north of the River Usk and about 100 metres above the floor of the Usk Valley at around above sea level. The geographical feature from which it derives its name separates the rolling moorland of Cefn Moel and Mynydd Llangorse in the northeast from Buckland Hill to the southwest. Various parts of the village command panoramic views across the Rhiangoll valley to the south-western flanks of the Black Mountains, west to the Brecon Beacons and south to Mynydd Llangynidr and Mynydd Llangatwg. About to the northwest is the hill of Allt yr Esgair (commonly referred to locally as 'The Allt ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mynydd Llangorse
Mynydd Llangorse is a hill on the western edge of the Black Mountains in the Brecon Beacons National Park in Powys, south Wales. It lies two miles east of Llangors and its lake and 5 miles south of Talgarth. Its summit at 515m (1690 feet) overtops the location 600m to the south at which a trig point is sited by 9m. The broad spur of Cefn Moel extends south towards the village of Bwlch whilst a spur to the southeast forms Pen Tir which reaches just over 450m above sea level. It is a Marilyn with a prominence of 161 metres. Geology The lower slopes of the hill are formed from mudstones of the St Maughans Formation whilst the upper slopes are formed from sandstones and mudstones of the Senni Beds Formation, both of the Old Red Sandstone which was laid down during the Devonian period. A thin calcrete known as the Ffynnon Limestone occurs at the junction of the two formations in some places. The calcrete and the sandstone have been quarried in various places over the years.British G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Rhiangoll North Of Cwmdu - Geograph
''The'' () is a grammatical article in English, denoting persons or things already mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with pronouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of pronoun ''thee'') when followed by a v ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mynydd Troed
Mynydd Troed is a hill in the Black Mountains of the Brecon Beacons National Park in Powys, south Wales. Its name literally translates to "Foot Mountain," based how it appears when viewed from the Allt Mawr ridge. It lies south of Talgarth and northeast of the village of Llangors on the western side of the range. Its summit at the northern end of a northwest to southeast aligned ridge reaches above sea level and is crowned by a trig point. Geology The base of the hill is formed from mudstones of the St Maughans Formation whilst the upper part is formed from the sandstones and mudstones of the Senni Beds Formation, both of which are assigned to the Old Red Sandstone laid down during the Devonian period. A few old landslides scar its slopes, a couple of which are seen to advantage from Castell Dinas and the ridge of Y Grib to the east. A number of small quarries have been worked on its slopes in the past.British Geological Survey 1:50,000 map sheet 214 'Talgarth' & acco ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires distinguishing features, such as Crevasse, crevasses and Serac, seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent other than the Australian mainland, including Oceania's high-latitude oceanic island countries such as New Zealand. Between lati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ice Ages
An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and greenhouse periods, during which there are no glaciers on the planet. Earth is currently in the Quaternary glaciation. Individual pulses of cold climate within an ice age are termed ''glacial periods'' (or, alternatively, ''glacials, glaciations, glacial stages, stadials, stades'', or colloquially, ''ice ages''), and intermittent warm periods within an ice age are called ''interglacials'' or ''interstadials''. In glaciology, ''ice age'' implies the presence of extensive ice sheets in both northern and southern hemispheres. By this definition, Earth is currently in an interglacial period—the Holocene. The amount of anthropogenic greenhouse gases emitted into Earth's oceans and atmosphere is predicted to prevent the next glacial period for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacial
A glacial period (alternatively glacial or glaciation) is an interval of time (thousands of years) within an ice age that is marked by colder temperatures and glacier advances. Interglacials, on the other hand, are periods of warmer climate between glacial periods. The Last Glacial Period ended about 15,000 years ago. The Holocene is the current interglacial. A time with no glaciers on Earth is considered a greenhouse climate state. Quaternary Period Within the Quaternary, which started about 2.6 million years before present, there have been a number of glacials and interglacials. At least eight glacial cycles have occurred in the last 740,000 years alone. Penultimate Glacial Period The Penultimate Glacial Period (PGP) is the glacial period that occurred before the Last Glacial Period. It began about 194,000 years ago and ended 135,000 years ago, with the beginning of the Eemian interglacial. Last Glacial Period The last glacial period was the most recent glacial period ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cwmdu, Powys
Cwmdu or Llanfihangel Cwmdu is a small village and community situated in the heart of the Black Mountains in Powys, Wales. Its name is derived from the Welsh language "Cwm Du", which means 'Black Valley'. It is located on the A479 Talgarth to Tretower road. Nearby towns include Crickhowell and Abergavenny. The population of the community, Llanfihangel Cwmdu with Bwlch and Cathedine, which includes Cwmdu and nearby villages Bwlch, and Tretower. Cathedine is actually in the neighbouring community of Llangors. as of the 2011 UK Census was 1026. It is in the historic county of Brecknockshire. Amenities Cwmdu has several public facilities, including a park, a village pub, the Farmers Arms and a cafe, the Mynydd-Ddu Tea Room. Its former primary school, which opened in 1873 and was visited by Prince Charles in 2006, closed in 2012 and the building now contains an art gallery. Cwmdu attracts many tourists every year, who mainly consist of hikers hillwalking through on the Beacon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pen Allt-mawr
Pen Allt-mawr is a high subsidiary summit of Waun Fach and the third highest peak in the Black Mountains in south-eastern Wales. A very recognisable and prominent peak of the Black Mountains, it lies near the end of the more westerly of Waun Fach's two broad southern ridges. Its top Pen Twyn Glas is to the north, while its close neighbour Pen Cerrig-calch is to the south. A prominent spur 1 km to the SSW of the summit is known as Pen Gloch-y-pibwr. The stepped Bryniog ridge curves southward from this point. Its summit is stony and has damaged Bronze Age cairns and a large shelter cairn together with a trig point. Further Bronze Age cairns are found along the western edge of the plateau to the south. Geology The summit of Pen Allt-mawr is at the northern tip of a broadly triangular summit surface formed from a slab of southerly tilting upper Old Red Sandstone traditionally known as the Quartz Conglomerate. These rocks which date from the Late Devonian Epoch are co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.png "Click for more on -> The Rhiangoll North Of Cwmdu - Geograph")
