Henblas Burial Chamber
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Henblas Burial Chamber
Henblas Burial Chamber is a Neolithic dolmen located in Henblas, to the southwest of Llangristiolus, Anglesey, Wales. Description The structure consists of a pair of large quartz rich boulders, measuring about 4.1 metres and 3 metres in height with circumferences of 15.3 metres and 16.8 metres respectively, with a large slab lying between them, measuring 5.5 metres by 4.7 metres, which has been interpreted as being the former capstone. The boulders appear to be in their original positions. The capstone appears to have scratch marks on them, which do not match the direction of the known ice flow A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires d ...s in the area, indicating that there has been some human interference. References {{reflist Prehistoric sites in Anglesey Dolmens in ...
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Anglesey
Anglesey ( ; ) is an island off the north-west coast of Wales. It forms the bulk of the Principal areas of Wales, county known as the Isle of Anglesey, which also includes Holy Island, Anglesey, Holy Island () and some islets and Skerry, skerries. The county borders Gwynedd across the Menai Strait to the southeast, and is otherwise surrounded by the Irish Sea. Holyhead is the largest town, and the administrative centre is Llangefni. The county is part of the Preserved counties of Wales, preserved county of Gwynedd. Anglesey is the northernmost county in Wales. The Isle of Anglesey has an area of and a population of in . After Holyhead (12,103), the largest settlements are Llangefni (5,500) and Amlwch (3,967). The economy of the county is mostly based on agriculture, energy, and tourism, the latter especially on the coast. Holyhead is also a major ferry port for Dublin, Ireland. The county has the second-highest percentage of Welsh language, Welsh speakers in Wales, at 57.2%, ...
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Dolmen
A dolmen, () or portal tomb, is a type of single-chamber Megalith#Tombs, megalithic tomb, usually consisting of two or more upright megaliths supporting a large flat horizontal capstone or "table". Most date from the Late Neolithic period (40003000 BCE) and were sometimes covered with earth or smaller stones to form a tumulus (burial mound). Small pad-stones may be wedged between the cap and supporting stones to achieve a level appearance. In many instances, the covering has eroded away, leaving only the stone "skeleton". In Sumba (Indonesia), dolmens are still commonly built (about 100 dolmens each year) for collective graves according to lineage. The traditional village of Wainyapu, Sumba, Wainyapu has some 1,400 dolmens. Etymology Celtic or French The word ''dolmen'' entered archaeology when Théophile Corret de la Tour d'Auvergne used it to describe megalithic tombs in his (1796) using the spelling ''dolmin'' (the current spelling was introduced about a decade later and h ...
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Neolithic
The Neolithic or New Stone Age (from Ancient Greek, Greek 'new' and 'stone') is an archaeological period, the final division of the Stone Age in Mesopotamia, Asia, Europe and Africa (c. 10,000 BCE to c. 2,000 BCE). It saw the Neolithic Revolution, a wide-ranging set of developments that appear to have arisen independently in several parts of the world. This "Neolithic package" included the History of agriculture, introduction of farming, domestication of animals, and change from a hunter-gatherer lifestyle to one of sedentism, settlement. The term 'Neolithic' was coined by John Lubbock, 1st Baron Avebury, Sir John Lubbock in 1865 as a refinement of the three-age system. The Neolithic began about 12,000 years ago, when farming appeared in the Epipalaeolithic Near East and Mesopotamia, and later in other parts of the world. It lasted in the Near East until the transitional period of the Chalcolithic (Copper Age) from about 6,500 years ago (4500 BCE), marked by the development ...
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Dolmen
A dolmen, () or portal tomb, is a type of single-chamber Megalith#Tombs, megalithic tomb, usually consisting of two or more upright megaliths supporting a large flat horizontal capstone or "table". Most date from the Late Neolithic period (40003000 BCE) and were sometimes covered with earth or smaller stones to form a tumulus (burial mound). Small pad-stones may be wedged between the cap and supporting stones to achieve a level appearance. In many instances, the covering has eroded away, leaving only the stone "skeleton". In Sumba (Indonesia), dolmens are still commonly built (about 100 dolmens each year) for collective graves according to lineage. The traditional village of Wainyapu, Sumba, Wainyapu has some 1,400 dolmens. Etymology Celtic or French The word ''dolmen'' entered archaeology when Théophile Corret de la Tour d'Auvergne used it to describe megalithic tombs in his (1796) using the spelling ''dolmin'' (the current spelling was introduced about a decade later and h ...
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Henblas, Anglesey
Henblas is an area in the community of Llangristiolus, Anglesey, Wales, which is 130.7 miles (210.3 km) from Cardiff and 214.6 miles (345.3 km) from London. References See also *List of localities in Wales by population The following is a list of built-up areas in Wales by population according to the 2021 and 2011 Census. 2021 This is a list of built-up areas as of the 2021 census.Within the dataset under 1d. Over 10,000 Under 10,000 2011 See also *List of ... Villages in Anglesey Llangristiolus {{Anglesey-geo-stub ...
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Llangristiolus
Llangristiolus is a village and Community (Wales), community in the middle of Anglesey, Wales, southwest of Llangefni, and is named after Cristiolus, Saint Cristiolus. The Afon Cefni, River Cefni flows through the village. The village is within a mile of the A5 road (Great Britain), A5 and A55 road (Great Britain), A55 roads. The village of Rhostrehwfa is in the community. St Cristiolus's Church, Llangristiolus, The church of St Cristiolus dates from the 12th century. Notable people * Henry Maurice (theologian), Henry Maurice (ca.1647–1691), a Welsh clergyman * Richard Owen (minister), Richard Owen, (1839–1887), a Welsh Calvinistic Methodist minister and preacher. * Edward Greenly (1861–1951), English geologist, buried at Llangristiolus * Medwyn Williams (born ca.1940), a Welsh vegetable gardener, 11 x gold medallist at the Chelsea Flower Show. * Naomi Watts (born 1968), film actress, lived in Llangristiolus with her maternal grandparents at Llanfawr as a child. * Rhun ap ...
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Quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The Atom, atoms are linked in a continuous framework of SiO4 silicon–oxygen Tetrahedral molecular geometry, tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of Silicon dioxide, SiO2. Quartz is, therefore, classified structurally as a Silicate mineral#Tectosilicates, framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation from α-quartz to β-quartz takes place abruptly at . Since the transformation is accompanied by a significant change in volume, it can easily induce microfracturing of ceramics or rocks passing through this temperature threshold. There are many different varieties of quartz, several of which are classifi ...
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Boulder
In geology, a boulder (or rarely bowlder) is a rock fragment with size greater than in diameter. Smaller pieces are called cobbles and pebbles. While a boulder may be small enough to move or roll manually, others are extremely massive. In common usage, a boulder is too large for a person to move. Smaller boulders are usually just called rocks or stones. Etymology The word ''boulder'' derives from ''boulder stone'', from Middle English ''bulderston'' or Swedish ''bullersten''.boulder. (n.d.)
Online Etymology Dictionary. Retrieved December 9, 2011, from Dictionary.com website.


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Coping (architecture)
Coping (from ''cope'', Latin ''capa'') is the capping or covering of a wall. A splayed or wedge coping is one that slopes in a single direction; a saddle coping slopes to either side of a central high point. Coping may be made of stone, brick, clay or terracotta, concrete or cast stone, tile, slate, wood, Thatching, thatch, or various metals, including aluminum, copper, stainless steel, steel, and zinc. Stone coping used in contemporary landscaping is sometimes referred to as a "wall cap" in the US, with the stones referred to as capstones. In the UK coping is distinct from capping in that the former has an overhang with a drip groove, whereas the latter is flush with the face of the wall below. In all cases it should have a weathered (slanted or curved) top surface to throw off the water. In Romanesque architecture, Romanesque work, copings appeared plain and flat, and projected over the wall with a throating to form a drip. In later work a steep slope was given to the weather ...
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Ice Flow
A glacier (; or ) is a persistent body of dense ice, a form of rock, that is constantly moving downhill under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as crevasses and 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“Glacier, N., Pronunciation.” Oxford English Dictionary, Oxford UP, June 2024, https://doi.org/10.1093/OED/7553486115. Accessed 25 Jan. 2025. 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 cont ...
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Prehistoric Sites In Anglesey
Prehistory, also called pre-literary history, is the period of human history between the first known use of stone tools by hominins  million years ago and the beginning of recorded history with the invention of writing systems. The use of symbols, marks, and images appears very early among humans, but the earliest known writing systems appeared years ago. It took thousands of years for writing systems to be widely adopted, with writing having spread to almost all cultures by the 19th century. The end of prehistory therefore came at different times in different places, and the term is less often used in discussing societies where prehistory ended relatively recently. It is based on an old conception of history that without written records there could be no history. The most common conception today is that history is based on evidence, however the concept of prehistory hasn't been completely discarded. In the early Bronze Age, Sumer in Mesopotamia, the Indus Valley Civilis ...
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Dolmens In Wales
A dolmen, () or portal tomb, is a type of single-chamber megalithic tomb, usually consisting of two or more upright megaliths supporting a large flat horizontal capstone or "table". Most date from the Late Neolithic period (40003000 BCE) and were sometimes covered with earth or smaller stones to form a tumulus (burial mound). Small pad-stones may be wedged between the cap and supporting stones to achieve a level appearance. In many instances, the covering has eroded away, leaving only the stone "skeleton". In Sumba (Indonesia), dolmens are still commonly built (about 100 dolmens each year) for collective graves according to lineage. The traditional village of Wainyapu has some 1,400 dolmens. Etymology Celtic or French The word ''dolmen'' entered archaeology when Théophile Corret de la Tour d'Auvergne used it to describe megalithic tombs in his (1796) using the spelling ''dolmin'' (the current spelling was introduced about a decade later and had become standard in French by ...
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