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Roundton Hill
Roundton Hill is a rounded, steep sided, hill, volcanic in origin, in the easternmost part of old Montgomeryshire (in present day-Powys), Wales, which juts into the English border near Church Stoke. It is managed as a nature reserve by the Montgomeryshire Wildlife Trust, who acquired it in 1985. Archaeology There was once an Iron Age hillfort here. The vantage point offers views across the surrounding countryside, with views of Corndon Hill to the north, as well as the Cambrian Mountains to the west. Lead and Barytes mines run into the hill, and are today used as a roost by Horseshoe and Daubenton's bats. Having avoided the plough, the hill's steep rocky slopes still support plants such as the mountain pansy, which has long since disappeared from most of the hills in mid-Wales. The reserve was made a Site of Special Scientific Interest (SSSI) in 1986. See also *List of hillforts in Wales This is a list of hillforts in Wales. Anglesey *Bwrdd Arthur, Din Sylwy (Bwrdd Arth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Church Stoke
Churchstoke or Church Stoke ( cy, Yr Ystog) is a village, community and electoral ward in Montgomeryshire, Powys, Wales. Located in the southeast of the Vale of Montgomery, it is overlooked by Todleth Hill, Roundton Hill and Corndon Hill. The rivers Caebitra and Camlad have their confluence just outside the village. The nearest town is Montgomery. In the 2011 census the village had a population of 708. The community of Churchstoke covers a wider area than the village, including the neighbouring villages of Hyssington and The Marsh. Recently the detached part of the community around Weston Madoc was transferred to Montgomery's community. The community is situated on a salient and covers an area of over . Etymology The placename identifies it as a farm (or settlement) with a church; it was recorded as 'Cirestoc' in 1086 in the Domesday Book. St. Nicholas Church The parish church today is largely the result of 19th-century rebuilding, but it retains its 13th-century tower ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Barytes
Baryte, barite or barytes ( or ) is a mineral consisting of barium sulfate ( Ba S O4). Baryte is generally white or colorless, and is the main source of the element barium. The ''baryte group'' consists of baryte, celestine (strontium sulfate), anglesite (lead sulfate), and anhydrite (calcium sulfate). Baryte and celestine form a solid solution (Ba,Sr)SO4. Names and history The radiating form, sometimes referred to as ''Bologna Stone'', attained some notoriety among alchemists for specimens found in the 17th century near Bologna by Vincenzo Casciarolo. These became phosphorescent upon being calcined. Carl Scheele determined that baryte contained a new element in 1774, but could not isolate barium, only barium oxide. Johan Gottlieb Gahn also isolated barium oxide two years later in similar studies. Barium was first isolated by electrolysis of molten barium salts in 1808 by Sir Humphry Davy in England. The American Petroleum Institute specification API 13/ISO 13500, which governs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Age Britain
The British Iron Age is a conventional name used in the archaeology of Great Britain, referring to the prehistoric and protohistoric phases of the Iron Age culture of the main island and the smaller islands, typically excluding prehistoric Ireland, which had an independent Iron Age culture of its own. The parallel phase of Irish archaeology is termed the Irish Iron Age. The Iron Age is not an archaeological horizon of common artefacts but is rather a locally-diverse cultural phase. The British Iron Age followed the British Bronze Age and lasted in theory from the first significant use of iron for tools and weapons in Britain to the Romanisation of the southern half of the island. The Romanised culture is termed Roman Britain and is considered to supplant the British Iron Age. The tribes living in Britain during this time are often popularly considered to be part of a broadly-Celtic culture, but in recent years, that has been disputed. At a minimum, "Celtic" is a linguistic te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanism Of Wales
Volcanism, vulcanism or volcanicity is the phenomenon of eruption of molten rock (magma) onto the surface of the Earth or a solid-surface planet or moon, where lava, pyroclastics, and volcanic gases erupt through a break in the surface called a vent. It includes all phenomena resulting from and causing magma within the crust or mantle of the body, to rise through the crust and form volcanic rocks on the surface. Magmas, that reach the surface and solidify, form extrusive landforms. Volcanic processes Magma from the mantle or lower crust rises through the crust towards the surface. If magma reaches the surface, its behavior depends on the viscosity of the molten constituent rock. Viscous (thick) magma produces volcanoes characterised by explosive eruptions, while non-viscous (runny) magma produce volcanoes characterised by effusive eruptions pouring large amounts of lava onto the surface. In some cases, rising magma can cool and solidify without reaching the surface. Inste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nature Reserves In Wales
National nature reserves in Wales are selected and designated by Natural Resources Wales (NRW) (formerly the Countryside Council for Wales). There are 76 reserves all of which are also SSSIs, they cover , or less than 1.5% of the land area of Wales. They range in size from Dan yr Ogof at to Berwyn which covers . A national nature reserve is designated because of its special biological, geological, habitat or landscape value and most in Wales are open to the public. They include upland and lowland areas, several offshore islands and in some cases estuarine and intertidal zones. Management Although the majority of sites are managed by NRW, a number are managed by other bodies, mainly in the public and wildlife charity sectors, including: List of national nature reserves in Wales {, , {, class="wikitable sortable" , - ! scope="col" , Name ! scope="col" , Region/area ! scope="col" , Reserve manager , - , Aberbargoed Grasslands , , Southeast , , Caerphilly , - , All ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains And Hills Of Powys
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hillforts In Powys
A hillfort is a type of earthwork used as a fortified refuge or defended settlement, located to exploit a rise in elevation for defensive advantage. They are typically European and of the Bronze Age or Iron Age. Some were used in the post-Roman period. The fortification usually follows the contours of a hill and consists of one or more lines of earthworks, with stockades or defensive walls, and external ditches. Hillforts developed in the Late Bronze and Early Iron Age, roughly the start of the first millennium BC, and were used in many Celtic areas of central and western Europe until the Roman conquest. Nomenclature The spellings "hill fort", "hill-fort" and "hillfort" are all used in the archaeological literature. The ''Monument Type Thesaurus'' published by the Forum on Information Standards in Heritage lists ''hillfort'' as the preferred term. They all refer to an elevated site with one or more ramparts made of earth, stone and/or wood, with an external ditch. Many ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Hillforts In Wales
This is a list of hillforts in Wales. Anglesey *Bwrdd Arthur, Din Sylwy (Bwrdd Arthur) (), contour fort *Caer Idris Hillfort (), promontory fort *Caer y Twr (), partial contour fort *Dinas Gynfor (), promontory fort *Dinas Porth Ruffydd (), promontory fort *Mynydd Llwydiarth (Anglesey), Mynydd Llwydiarth (), promontory fort *Parciau hill fort (), promontory fort *Tan-y-graig, Llanffinan (), contour fort *Twyn-y-Parc (), promontory fort *Y Werthyr hillfort (), marsh fort *Y Werthyr, Llanddeusant (), contour fort *Ynys-y-Fydlyn (), promontory fort Bridgend County Borough *Cae Summerhouse Camp (), partial contour fort *Chapel Hill Camp, Merthyr Mawr House (), contour fort *Coed-y-Mwstwr (), contour fort *Cwm Llwyd (), partial contour fort *Mynydd Twmpathyddaer (), contour fort *Mynydd y Gaer hillfort, Mynydd y Gaer (), partial contour fort *Pen y Castell, Kenfig Hill (), contour fort *Y Bwlwarcau (), multiple enclosure hillfort *Y Bwlwarcau, Eastern Enclosure (), hillslope fort ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Viola Lutea
''Viola lutea'', the mountain pansy, is a species of violet that grows in Europe, from the British Isles to the Balkans. Description ''Viola lutea'' grows to a height of around . Its flowers are in diameter, and are typically yellow, although some individuals may have blue, purple or blotched flowers instead. Taxonomy ''Viola lutea'' was first described by William Hudson in his 1762 '' Flora Anglica''. ''V. lutea'' subsp. ''lutea'' is native to central and north-western Europe, from the British Isles to Austria; another subspecies occurs further east, from Hungary to the Balkans. Two very special subspecies are ''V. lutea'' subsp. ''calaminaria'' which occurs in the southernmost Netherlands and eastern Belgium, and ''V. lutea'' subsp. ''westfalica'', which only occurs at an extremely small locality near in East Westphalia, Germany. Both taxa have relatively recently evolved to take advantage of the local pollution left over after centuries of mining for metals in these lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daubenton's Bat
Daubenton's bat or Daubenton's myotis (''Myotis daubentonii'') is a Eurasian bat with rather short ears. It ranges from Ireland to Japan (Hokkaido) and is considered to be increasing its numbers in many areas. This bat was first described in 1817 by Heinrich Kuhl, who named it in honour of French naturalist Louis-Jean-Marie Daubenton. Description Daubenton's bat is a medium-sized to small species. The bat's fluffy fur is brownish-grey on the back and silvery-grey on the underside. Juveniles have darker fur than adults. The bats have reddish-pink faces and noses, but the area around the eyes is bare. When the bat is agitated, the ears are held at right angles. The wings and tail membrane are dark brown. Daubenton's bat is typically 45 to 55 mm long, with an average wingspan of 240 to 275 mm, and weighs between 7 and 15 g. Lifespan Daubenton's bats can live for up to 22 years. Habitat Daubenton's bat is found throughout Ireland and Europe, and as far as Japan and Kor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Horseshoe Bat
Horseshoe bats are bats in the family Rhinolophidae. In addition to the single living genus, ''Rhinolophus'', which has about 106 species, the extinct genus '' Palaeonycteris'' has been recognized. Horseshoe bats are closely related to the Old World leaf-nosed bats, family Hipposideridae, which have sometimes been included in Rhinolophidae. The horseshoe bats are divided into six subgenera and many species groups. The most recent common ancestor of all horseshoe bats lived 34–40 million years ago, though it is unclear where the geographic roots of the family are, and attempts to determine its biogeography have been indecisive. Their taxonomy is complex, as genetic evidence shows the likely existence of many cryptic species, as well as species recognized as distinct that may have little genetic divergence from previously recognized taxa. They are found in the Old World, mostly in tropical or subtropical areas, including Africa, Asia, Europe, and Oceania. Horseshoe bats are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lead
Lead is a chemical element with the symbol Pb (from the Latin ) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to air. Lead has the highest atomic number of any stable element and three of its isotopes are endpoints of major nuclear decay chains of heavier elements. Lead is toxic, even in small amounts, especially to children. Lead is a relatively unreactive post-transition metal. Its weak metallic character is illustrated by its amphoteric nature; lead and lead oxides react with acids and bases, and it tends to form covalent bonds. Compounds of lead are usually found in the +2 oxidation state rather than the +4 state common with lighter members of the carbon group. Exceptions are mostly limited to organolead compounds. Like the lighter members of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
