Mwdwl-eithin

Mwdwl-eithin () is the highest point on the

Denbigh Moors Denbigh Moors (Welsh: Mynydd Hiraethog) is an upland region in Conwy and Denbighshire in north-east Wales, between Snowdonia and the Clwydian Range. It includes the large reservoirs Llyn Brenig and Llyn Alwen, and the Clocaenog Forest, which has ...

(

Welsh Welsh may refer to: Related to Wales * Welsh, referring or related to Wales * Welsh language, a Brittonic Celtic language spoken in Wales * Welsh people People * Welsh (surname) * Sometimes used as a synonym for the ancient Britons (Celtic peop ...

: Mynydd Hiraethog) of

North Wales , area_land_km2 = 6,172 , postal_code_type = Postcode , postal_code = LL, CH, SY , image_map1 = Wales North Wales locator map.svg , map_caption1 = Six principal areas of Wales common ...

. This gently rising mountain lies about east of

Betws-y-Coed Betws-y-coed (; '' en, prayer house in the wood'') is a village and community in the Conwy valley in Conwy County Borough, Wales, located in the historic county of Caernarfonshire, right on the boundary with Denbighshire, in the Gwydir Forest. ...

. On its summit is a

trig point A triangulation station, also known as a trigonometrical point, and sometimes informally as a trig, is a fixed surveying station, used in geodetic surveying and other surveying projects in its vicinity. The nomenclature varies regionally: they a ...

and a ruined building which still provides shelter against a storm. A few metres away is a large raised stone

cairn A cairn is a man-made pile (or stack) of stones raised for a purpose, usually as a marker or as a burial mound. The word ''cairn'' comes from the gd, càrn (plural ). Cairns have been and are used for a broad variety of purposes. In prehis ...

. The whole area is underlain by

Silurian The Silurian ( ) is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at million years ago ( Mya), to the beginning of the Devonian Period, Mya. The Silurian is the shortest period of the Paleozo ...

mudstone Mudstone, a type of mudrock, is a fine-grained sedimentary rock whose original constituents were clays or muds. Mudstone is distinguished from '' shale'' by its lack of fissility (parallel layering).Blatt, H., and R.J. Tracy, 1996, ''Petrology. ...

which was extensively glaciated during the last British glaciation. The whole area is now very wet moorland dominated by heather (''

Calluna ''Calluna vulgaris'', common heather, ling, or simply heather, is the sole species in the genus ''Calluna'' in the flowering plant family Ericaceae. It is a low-growing evergreen shrub growing to tall, or rarely to and taller, and is found wide ...

'' and ''

Erica Erica or ERICA may refer to: * Erica (given name) * ''Erica'' (plant), a flowering plant genus * Erica (chatbot), a service of Bank of America * ''Erica'' (video game), a 2019 FMV video game * ''Erica'' (spider), a jumping spider genus * Eric ...

'' spp.) and rushes. Three of the surrounding valleys and depressions have been used for drinking water storage reservoirs,

Llyn Alwen Llyn Alwen is a small natural upland lake on Mynydd Hiraethog in Conwy County Borough, Wales at SH 898 565. It lies on the rolling Silurian moorland to the north-west of Mwdwl-eithin and about 10 km to the east of Betws y Coed. The discharge ...

Llyn Aled Llyn Aled is a lake on Mynydd Hiraethog in the Conwy County Borough. It is situated north of the A543 and to the north-east of the village of Pentrefoelas. It is a natural lake; however, a dam was built at its northern outlet to increase its si ...

and

Alwen Reservoir The Alwen Reservoir or Cronfa Alwen is a long reservoir near Pentre-Llyn-Cymmer in Conwy County Borough, Wales. History The reservoir and dam were constructed between 1911 and 1920 bAlexander Binnie, Son and Deacon(Resident Engineer John M. Pa ...

. Mountains and hills of Conwy County Borough Marilyns of Wales {{Conwy-geo-stub