located_in_the_administrative_territorial_entity tarrenhendre
A glacier ( or ) is a persistent body ___MASK72___ dense ice that is constantly moving under its own weight ; it forms where the accumulation ___MASK72___ snow exceeds its ablation ( melting and sublimation ) over many years , often centuries . Glaciers slowly deform and flow due to stresses induced by their weight , creating crevasses , seracs , and other distinguishing features . They also abrade ___MASK17___ and debris from their substrate to create landforms such as cirques and moraines . Glaciers form only on land and are distinct from the much thinner sea ice and lake ice that form on the surface ___MASK72___ bodies ___MASK72___ water . Tarrenhendre is a ___MASK36___ in ___MASK77___ , North ___MASK44___ . It is one of the Marilyns in the Cadair Idris group . Lying to the south of Cadair Idris , it and its neighbour Tarren y Gesail form the bulk of the Tarren subgroup . The Tarrens rise from the south shore of the Tal - y - llyn Lake and end at the Dyfi estuary . The summit is heathery and boggy , and has a small cairn to mark the highest point . The views are extensive to the south and east , with Plynlimon and Cardigan Bay ahead , while the north views are dominated by Cadair Idris and Maesglase to the west . The Tarrens can be thought of as forgotten mountains of ___MASK77___ , overshadowed by the popularity of Cadair Idris , occupying the sleepy south - western frontier of the ___MASK77___ national park . ___MASK24___ (; ) is a large town in ___MASK53___ ___MASK44___ , between the Welsh mountains and the lower Dee Valley alongside the border with England . In ___MASK24___ County Borough , it is the largest town in ___MASK53___ ___MASK44___ and an administrative , commercial , retail and educational centre . ___MASK84___ is a ___MASK29___ resort town and community in the historic county of Denbighshire , situated on the north east coast of Wales , at the mouth of the River Clwyd ( Welsh : " Afon Clwyd "). To the west is the suburb of Kinmel Bay , with the resort of Towyn further west , Prestatyn to the east and Rhuddlan to the south . At the 2011 Census , ___MASK84___ had a population of 25 , 149 . The conurbation of Abergele - ___MASK84___ - Prestatyn has a population of over 60 , 000 , with ___MASK84___ - Kinmel Bay having 31 , 229 people . Dolgellau ( formerly " Dolgell ( e ) y " ; see below ) is a market town in ___MASK61___ , north - west Wales , lying on the River Wnion , a tributary of the River Mawddach . It was the county town of Merionethshire before that became a part of the county of ___MASK61___ . Dolgellau is the main base for climbers of Cader Idris . ___MASK15___ is a country that is part ___MASK72___ the United Kingdom . It shares land borders with ___MASK13___ to the north and Wales to the west . The Irish Sea lies ___MASK87___ ___MASK72___ ___MASK15___ and the Celtic Sea lies to the ___MASK70___ . ___MASK15___ is separated from continental Europe by the North Sea to the east and the English Channel to the south . The country covers five - eighths ___MASK72___ the island ___MASK72___ Great Britain ( which lies in the North Atlantic ) in its centre and south ; and includes over 100 smaller islands such as the Isles ___MASK72___ Scilly , and the Isle ___MASK72___ Wight . ___MASK46___ ( or ; Welsh : ) is a principal area , local - government county and preserved county in Mid Wales . It is named after the successor Kingdom of ___MASK46___ , which formed after the Romans withdrew from Britain . Mid ___MASK44___ ( or simply " Y Canolbarth " " The Midlands ") is the name given to the central region of ___MASK44___ . The Mid ___MASK44___ Regional Committee of the National Assembly for ___MASK44___ covered the counties of ___MASK37___ and Powys and the area of ___MASK61___ that had previously been the district of Meirionydd . A similar definition is used by the BBC . The ___MASK44___ Spatial Plan defines a region known as " Central ___MASK44___ " which covers ___MASK37___ and Powys . If Mid ___MASK44___ is classed as ___MASK37___ and Powys , the area would be 6 , 962 square kilometres ( about the size of Cumbria ). A ___MASK67___ is a natural flowing watercourse , usually ___MASK26___ , flowing towards an ocean , sea , lake or another ___MASK67___ . In some cases a ___MASK67___ flows into the ground and becomes dry at the end of its course without reaching another body of water . Small rivers can be referred to using names such as stream , creek , brook , rivulet , and rill . There are no official definitions for the generic term ___MASK67___ as applied to geographic features , although in some countries or communities a stream is defined by its size . Many names for small rivers are specific to geographic location ; examples are " run " in some parts of the United States , " burn " in Scotland and northeast England , and " beck " in northern England . Sometimes a ___MASK67___ is defined as being larger than a creek , but not always : the language is vague . Yr Wyddfa commonly known as Snowdon in English , is the highest ___MASK36___ in ___MASK44___ , at an elevation of above sea level , and the highest point in the ___MASK83___ south of the Scottish Highlands . It is located in Snowdonia National Park (") in ___MASK61___ , and has been described as " probably the busiest ___MASK36___ in Britain ". It is designated as a national nature reserve for its rare flora and fauna . ___MASK53___ ___MASK44___ is the northernmost unofficial region of ___MASK44___ . Retail , transport and educational infrastructure are centred on Wrexham , Rhyl , Colwyn Bay , Llandudno and Bangor . It is bordered to the south by the counties of ___MASK37___ and Powys in Mid ___MASK44___ , and to the east by the counties of Shropshire in the West Midlands and Cheshire in ___MASK53___ West England . A moraine is any glacially formed accumulation ___MASK72___ unconsolidated glacial debris ( soil and ___MASK17___ ) that occurs in both currently and formerly glaciated regions on Earth ( i . e . a past glacial maximum ), through geomorphological processes . Moraines are formed from debris previously carried along by a glacier and normally consist ___MASK72___ somewhat rounded particles ranging in size from large boulders to minute glacial flour . Lateral moraines are formed at the side ___MASK72___ the ice flow and terminal moraines at the foot , marking the maximum advance ___MASK72___ the glacier . Other types ___MASK72___ moraine include ground moraines , till - covered areas with irregular topography , and medial moraines which are formed where two glaciers meet . The Ordovician is a geologic period and system , the second ___MASK72___ six periods ___MASK72___ the Paleozoic Era . The Ordovician spans 41 . 2 million years from the end ___MASK72___ the Cambrian Period million years ago ( Mya ) to the start ___MASK72___ the Silurian Period Mya . The Ordovician , named after the Celtic tribe ___MASK72___ the Ordovices , was defined by Charles Lapworth in 1879 to resolve a dispute between followers ___MASK72___ Adam Sedgwick and Roderick Murchison , who were placing the same ___MASK17___ beds in northern Wales into the Cambrian and Silurian periods , respectively . Lapworth , recognized that the fossil fauna in the disputed strata were different from those ___MASK72___ either the Cambrian or the Silurian periods , and placed them in a period ___MASK72___ their own . It received international sanction in 1960 , when it was adopted as an official period ___MASK72___ the Paleozoic Era by the International Geological Congress . Volcanism is the phenomenon ___MASK72___ eruption ___MASK72___ molten ___MASK17___ ( magma ) onto the surface ___MASK72___ 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 ___MASK72___ the body , to rise through the crust and form volcanic rocks on the surface . A ___MASK36___ range ( also ___MASK36___ barrier , belt , or system ) is a geographic area containing numerous geologically related mountains . A ___MASK36___ system or system ___MASK72___ ___MASK36___ ranges , sometimes is used to combine several geological features that are geographically ( regionally ) related . On Earth , ___MASK41___ significant ___MASK36___ ranges are the result ___MASK72___ plate tectonics , though ___MASK36___ ranges are formed by a range ___MASK72___ processes , are found on many planetary mass objects in the Solar System and are likely a feature ___MASK72___ ___MASK41___ terrestrial planets . Igneous ___MASK17___ ( derived from the Latin word " ignis " meaning fire ), or magmatic ___MASK17___ , is one of the three main ___MASK17___ types , the others being sedimentary and metamorphic . Igneous ___MASK17___ is formed through the cooling and solidification of magma or lava . The magma can be derived from partial melts of existing rocks in either a planet ' s mantle or crust . Typically , the melting is caused by one or more of three processes : an increase in temperature , a decrease in pressure , or a change in composition . Solidification into ___MASK17___ occurs either below the surface as intrusive rocks or on the surface as extrusive rocks . Igneous ___MASK17___ may form with crystallization to form granular , crystalline rocks , or without crystallization to form natural glasses . A ___MASK36___ is a large landform that stretches above the surrounding land in a limited area , usually in the form ___MASK72___ a peak . A ___MASK36___ is generally steeper than a hill . Mountains are formed through tectonic forces or volcanism . These forces can locally raise the surface ___MASK72___ the earth . Mountains erode slowly through the action ___MASK72___ rivers , weather conditions , and glaciers . A few mountains are isolated summits , but ___MASK41___ occur in huge ___MASK36___ ranges . Colwyn Bay is a town , community and ___MASK29___ resort in ___MASK54___ County Borough on the north coast of Wales overlooking the Irish Sea . Eight neighbouring communities are incorporated within its postal district . Established as its own separate parish in 1844 with just a small grouping of homes and farms where the community of Old Colwyn stands today , Colwyn Bay has expanded to become the second - largest community and business centre in the north of Wales as well as the 15th largest in the whole of Wales with the urban statistical area having a population of 31 , 353 at the 2011 census . ( Including Old Colwyn , Rhos - on - Sea , Mochdre and Llysfaen communities ]. Locally nicknamed " The Bay ". ___MASK61___ is an area in north - west Wales , named after the old Kingdom of ___MASK61___ . As a local government area , it is the second biggest in Wales in terms of geographical area and also one of the most sparsely populated . A majority of the population are Welsh - speaking . The name ___MASK61___ is also used for a preserved county , covering the two local government areas of ___MASK61___ and the Isle of Anglesey . Culturally and historically , the name can also be used for most of North Wales ( for instance , the area covered by the ___MASK61___ Constabulary ), roughly corresponding to the territory of the Kingdom of ___MASK61___ at its greatest extent . The current area is 2 , 548 square km ( 983 . 78 sq miles , slightly smaller than Luxembourg ) with a population as measured in the 2011 Census of 121 , 874 . ___MASK68___ ( or ; archaically the County Palatine of ___MASK51___ ; abbreviated Ches .) is a county in North West England , bordering Merseyside and Greater Manchester to the north , Derbyshire to the east , Staffordshire and Shropshire to the south and Wales to the west ( bordering Wrexham and Flintshire ). ___MASK68___ ' s county town is ___MASK51___ ; the largest town is Warrington . ___MASK77___ is a mountainous region in north ___MASK44___ and a national park of in area . It was the first to be designated of the three national parks in ___MASK44___ , in 1951 . ___MASK64___ ( or ; alternatively Salop ; abbreviated , in print only , Shrops ; demonym Salopian ) is a county located between ___MASK11___ in England and ___MASK44___ . It borders ___MASK46___ and Wrexham in ___MASK44___ to the west and north - west , Cheshire to the north , Staffordshire to the east , Worcestershire to the south - east and Herefordshire to the south . ___MASK64___ Council was created in 2009 , a unitary authority taking over from the previous county council and five district councils . The borough of ___MASK39___ and Wrekin has been a separate unitary authority since 1998 but continues to be included in the ceremonial county . Cadair Idris or Cader Idris is a ___MASK36___ in ___MASK61___ , Wales , which lies at the southern end of the Snowdonia National Park near the town of Dolgellau . The peak , which is one of the most popular in Wales for walkers and hikers , is composed largely of Ordovician igneous rocks , with classic glacial erosion features such as cwms , moraines , striated rocks , and roches moutonnées . A ___MASK56___ is a park in use for conservation purposes . Often it is a reserve ___MASK72___ natural , semi - natural , or developed land that a sovereign state declares or owns . Although individual nations designate their own national parks differently , there is a common idea : the conservation ___MASK72___ ' wild nature ' for posterity and as a symbol ___MASK72___ national pride . An international organization , the International Union for Conservation ___MASK72___ Nature ( IUCN ), and its World Commission on Protected Areas , has defined " National Park " as its " Category II " type ___MASK72___ protected areas . Llandudno is a ___MASK29___ resort , town and community in ___MASK54___ County Borough , Wales , located on the Creuddyn peninsula , which protrudes into the Irish Sea . In the 2011 UK census , the community , which includes Penrhyn Bay and Penrhynside , had a population of 20 , 701 . The town ' s name is derived from its patron saint , Saint Tudno . ___MASK44___ is a country that is part of the United Kingdom and the island of Great Britain . It is bordered by England to the east , the Irish Sea to the north and west , and the ___MASK8___ Channel to the south . It had a population in 2011 of 3 , 063 , 456 and has a total area of . ___MASK44___ has over of coastline and is largely mountainous , with its higher peaks in the north and central areas , including Snowdon , its highest summit . The country lies within the north temperate zone and has a changeable , maritime climate . ___MASK37___ is a county in Mid Wales . In the Middle Ages , it was a minor kingdom also known for a time as Seisyllwg . Following its Norman conquest , the name was anglicised to Cardigan and then Cardiganshire and it began to be administered as a county in 1282 . The county had a population of 75 , 900 at the 2011 UK census . Its largest town , Aberystwyth , is one of the two administrative centres ; the other being Aberaeron . Aberystwyth houses Aberystwyth University , Bronglais Hospital and the National Library of Wales . The inland town of Lampeter houses part of the University of Wales Trinity Saint David . More than half the population speak the Welsh language and the county is considered a centre of Welsh culture . A landform is a natural feature ___MASK72___ the solid surface ___MASK72___ the Earth or other planetary body . Landforms together make up a given terrain , and their arrangement in the landscape is known as topography . Typical landforms include hills , mountains , plateaus , canyons , valleys , as well as shoreline features such as bays , peninsulas , and seas , including submerged features such as mid - ocean ridges , volcanoes , and the great ocean basins .