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Nant Glais Caves
The Nant Glais Caves are a collection of six caves located near Vaynor in Merthyr Tydfil County Borough, South Wales. The largest cave, Ogof Rhyd Sych, measures around 2000m long. The site has been designated a Site of Special Scientific Interest. Geography The caves are located in the Nant Glais Valley, to the west of the village of Vaynor in Merthyr Tydfil County Borough. There are six caves at the site. The two largest, Ogof y Ci and Ogof Rhyd Sych, measure approximately and in length respectively. Ogof y Ci has numerous offshoots on the southern edge for the passage of stream water, although they are all too narrow to be viewed. The northern side splits into two passages with one connecting the passage of water to the larger Ogof Rhyd Sych. This cave is prone to flooding as it receives the majority of overflow from the river and has been described as containing "low, wet, arduous passages". Although it is the longest of the caves at the site, traversing Rhyd Sych is difficul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vaynor
Vaynor (Welsh: ''Y Faenor'', meaning "The Manor") is a village and community (formerly a parish) in Merthyr Tydfil County Borough in Wales, United Kingdom. The population of the community at the 2011 census was 3,551. Location It is about four miles north of the town of Merthyr Tydfil and is within the borders of the Brecon Beacons National Park. The community includes the three villages of Cefn-coed-y-cymmer, Trefechan and Pontsticill as well as Pontsarn and Vaynor. To the west are Nant Glais Caves. It also includes the southern section of Pontsticill Reservoir and the eastern end of Llwyn-On Reservoir. History Until 1974, the village was a civil parish in the Vaynor and Penderyn Rural District of Brecknockshire. From 1974 to 1996, it was part of Merthyr Tydfil district in Mid Glamorgan. It is notable for its connections with the Ironmaster Robert Crawshay, owner of the world's first ironworks at Cyfarthfa, who is buried in Vaynor churchyard. Governance Between 1973 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Merthyr Tydfil County Borough
Merthyr Tydfil County Borough ( cy, Bwrdeistref Sirol Merthyr Tudful) is a county borough (since 1908) in the south-east of Wales. In mid 2018, it had an estimated population of 60,183. It is located in the historic county of Glamorgan and takes its name from the town with the same name. The county borough consists of the northern part of the Taff Valley and the smaller neighbouring Taff Bargoed Valley. It borders the counties of Rhondda Cynon Taf to the west, Caerphilly County Borough to the east, and Powys to the north. History Pre-industrial Merthyr What is now Merthyr Tydfil town centre was originally little more than a village. An ironworks existed in the parish in the Elizabethan period, but it did not survive beyond the early 1640s at the latest. In 1754, it was recorded that the valley was almost entirely populated by shepherds. Farm produce was traded at a number of markets and fairs, notably the Waun Fair above Dowlais.The Welsh Academy Encyclopedia of Wales. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Site Of Special Scientific Interest
A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of Man. SSSI/ASSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in the United Kingdom are based upon them, including national nature reserves, Ramsar sites, Special Protection Areas, and Special Areas of Conservation. The acronym "SSSI" is often pronounced "triple-S I". Selection and conservation Sites notified for their biological interest are known as Biological SSSIs (or ASSIs), and those notified for geological or physiographic interest are Geological SSSIs (or ASSIs). Sites may be divided into management units, with some areas including units that are noted for both biological and geological interest. Biological Biological SSSI/ASSIs may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boulder Choke
A boulder choke is a collection of large rocks or rubble that obstructs a shaft or passage in a cave or mine. In order to progress through passages cavers often need to negotiate or clear boulder chokes. Boulder chokes can be formed by rockfall, stream deposition, or mining debris. Due to the nature of their formation boulder chokes may be unstable and can prove difficult to navigate and map due to their complexity. In order to clear a boulder choke the rocks obstructing the passage may need to be removed, often requiring breaking up first either mechanically or using a small explosive. The Three Counties System became the longest cave in the UK when cavers succeeded in clearing a route through a boulder choke for to connect two known cave systems, an exercise that took three years. Boulder chokes can be hazardous, as unstable boulders can unexpectedly move, potentially crushing or trapping cavers. In May 1988, for example, three cavers were killed in a boulder choke in Ease Gil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Sites Of Special Scientific Interest In Mid & South Glamorgan
SSSIs in the UK are notified using the concept of an Area of Search (AOS), an area of between and in size. The Areas of Search were conceived and developed between 1975 and 1979 by the Nature Conservancy Council (NCC), based on regions created by the Local Government Act 1972.Joint Nature Conservation Committee (1998 revision); ''Guidelines for the Selection of Biological SSSIs'', section 4.5, pp. 14–15. . Whereas England had its Areas of Search based on 46 counties, those in Wales were based on a combination of the counties and smaller districts. In 1974, Wales was divided into 8 counties, with 37 districts. The NCC created 12 Welsh Areas of Search; they mostly follow county borders, but the larger counties (Dyfed, Powys and Gwynedd) were divided into multiple Areas using district borders. Mid and South Glamorgan were merged into a single AOS, whilst Llanelli district was included in the West Glamorgan AOS. Due to subsequent local government reorganisation in the UK si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
