Gwyddno Garanhir was the supposed ruler of a sunken land off the coast of Wales, known as Cantre'r Gwaelod. He was the father of Elffin ap Gwyddno, the foster-father of the famous Welsh poet Taliesin in the legendary account given in the late medieval Chwedl Taliesin.
Ceredigion ), historically Cardiganshire, is a county in the west of Wales. It borders Gwynedd across the Dyfi estuary to the north, Powys to the east, Carmarthenshire and Pembrokeshire to the south, and the Irish Sea to the west. Aberystwyth is the largest settlement and, together with Aberaeron, is an administrative centre of Ceredigion County Council.
Borth is a village and seaside resort in Ceredigion, Mid Wales; it is located 7 miles (11 km) north of Aberystwyth, on the Ceredigion Coast Path. The community includes the settlement of Ynyslas and the population was 1,399 in 2011. From being largely Welsh-speaking, the village has become anglicised; over 54 per cent of its residents were born in England. According to both the 1991 and 2001 censuses, 43 per cent of the residents of Borth were primarily Welsh-speakers.
Cardigan Bay is a large inlet of the Irish Sea, indenting the west coast of Wales between Bardsey Island, Gwynedd in the north, and Strumble Head, Pembrokeshire at its southern end. It is the largest bay in Wales.
Aberdyfi, also known as Aberdovey, is a village and community in Gwynedd, Wales, located on the northern side of the estuary of the River Dyfi.
A cantref was a medieval Welsh land division, particularly important in the administration of Welsh law.
Cantre'r Gwaelod, also known as Cantref Gwaelod or Cantref y Gwaelod, is a legendary ancient sunken kingdom said to have occupied a tract of fertile land lying between Ramsey Island and Bardsey Island in what is now Cardigan Bay to the west of Wales. It has been described as a "Welsh Atlantis" and has featured in folklore, literature, and song.
Sarn Badrig, also spelled Sarn Padrig, is one of several more or less parallel shingle reefs extending under the sea in Cardigan Bay on the west coast of Wales. The causeway is made of glacial deposits left by receding ice sheets at the end of the last ice age.
Seithenyn sometimes known as Seithenyn of the feeble mind is a figure from Welsh legend, apparently contemporary with King Gwyddno Garanhir. He is mentioned in a poem in the Llyfr Du Caerfyrddin, but becomes the protagonist of the story in a later version of the legend, in which he was responsible for the sea-defences of Cantre'r Gwaelod or Maes Gwyddno, in the kingdom of the legendary Gwyddno Garanhir, but neglected them one night because of his drunkenness. Because of this neglect, the sea overran it.
Ynyslas is a small Welsh village about 1.5 miles north of Borth and 8 miles north of Aberystwyth, within the county of Ceredigion. It is sandwiched between a long sandy beach in Cardigan Bay and the beach in the Dyfi Estuary. The area between the sea and the estuary beach is made up of the Ynyslas Sand Dunes which are part of the Dyfi National Nature Reserve and home to many rare plants and animals. The sands of the estuary beach can be driven onto and parked upon. The nature reserve has a visitor centre with toilets and a small shop. At the start of some BBC 1 programmes, the idents show people flying kites on sand dunes, and this was filmed at Ynyslas.
The Ceredigion Coast Path is a waymarked long distance footpath in the United Kingdom, on the coast of Ceredigion, Wales. It is 65 miles (105 km) in length, running along the coast of Cardigan Bay from Cardigan (52.0810°N 4.6608°W) to Ynyslas (52.5271°N 4.0495°W).
Ynyslas Sand Dunes are sand dunes located in Ceredigion, Wales. They border Cardigan Bay and the Dyfi Estuary between Ynyslas, Ceredigion and Aberdyfi, Gwynedd. The sand dunes are part of the Dyfi National Nature Reserve.
The Afon Leri is a river in Ceredigion, Wales. It rises at Llyn Craig-y-Pistyll and is joined at Talybont by Afon Ceulan before passing behind Borth to its mouth in the Dyfi estuary at Ynyslas.
Llangorwen is a village located in the county of Ceredigion, Mid-Wales. Close to Clarach Bay and a mile north of Aberystwyth.
Wallog is a beach on the coast of Cardigan Bay north of Aberystwyth between Clarach Bay and Borth in the county of Ceredigion, Mid-Wales.
Sarn y Bwch,, is one of three parallel reefs extending beneath the sea into Cardigan Bay from the west coast of Wales. The causeway, probably a medial moraine is made of glacial deposits left by receding ice sheets at the end of the last ice age. It is sometimes called Sarn y Bwlch, but this form is later and less common than Sarn y Bwch.
The geology of Snowdonia National Park in North Wales is dominated by sedimentary and volcanic rocks from the Cambrian and Ordovician periods with intrusions of Ordovician and Silurian age. There are Silurian and Cenozoic sedimentary rocks on the park's margins. The succession was intensely faulted and folded during the Caledonian Orogeny. The region was uplifted as the North Atlantic Ocean opened during the Cenozoic. The current mountainous landscape arises from repeated glaciations during the Quaternary period.
The bedrock geology of Ceredigion in west Wales consists wholly of a considerable thickness of Ordovician and Silurian age sedimentary rocks of marine origin. Unconsolidated deposits of Quaternary age include a widespread cover of glacial till, valley floor alluvium and scattered peat deposits in both upland and lowland settings.
The coastline of Wales extends from the English border at Chepstow westwards to Pembrokeshire then north to Anglesey and back eastwards to the English border once again near Flint. Its character is determined by multiple factors, including the local geology and geological processes active during and subsequent to the last ice age, its relative exposure to or shelter from waves, tidal variation and the history of human settlement and development which varies considerably from one place to another. The majority of the coast east of Cardiff in the south, and of Llandudno in the north, is flat whilst that to the west is more typically backed by cliffs. The cliffs are a mix of sandstones, shales and limestones, the erosion of which provides material for beach deposits. Of the twenty-two principal areas which deliver local government in Wales, sixteen have a coastline, though that of Powys consists only of a short section of tidal river some distance from the open sea. Its length has been estimated at 1,680 miles (2,700 km).
