![Head of a valley on Mynydd Mallaen - geograph](https://upload.wikimedia.org/wikipedia/commons/4/4e/Head_of_a_valley_on_Mynydd_Mallaen_-_geograph.org.uk_-_1421388.jpg)
Mynydd Mallaen () is an expansive plateau to the northwest of
Cilycwm
Cilycwm ( cy, Cil-y-cwm, ) is a village and parish located in Carmarthenshire, Wales. The community population taken at the 2011 census was 487.
Cilycwm lies on the west bank of Afon Gwenlais, a tributary of the Tywi, north of the town of Llan ...
in northeast
Carmarthenshire
Carmarthenshire ( cy, Sir Gaerfyrddin; or informally ') is a county in the south-west of Wales. The three largest towns are Llanelli, Carmarthen and Ammanford. Carmarthen is the county town and administrative centre. The county is known as ...
,
Wales
Wales ( cy, Cymru ) is a Countries of the United Kingdom, country that is part of the United Kingdom. It is bordered by England to the Wales–England border, east, the Irish Sea to the north and west, the Celtic Sea to the south west and the ...
. It forms part of the
Cambrian Mountains
The Cambrian Mountains ( cy, Mynyddoedd Cambria, in a narrower sense: ''Elenydd'') are a series of mountain ranges in Wales.
The term ''Cambrian Mountains'' used to apply to most of the upland of Wales. Since the 1950s, its application has becom ...
massif, and is north-west of the
Black Mountain (range)
The Black Mountain ( cy, Y Mynydd Du) is a mountain range in South, Mid and West Wales, straddling the county boundary between Carmarthenshire and Powys (formerly Brecknockshire) and forming the westernmost range of the Brecon Beacons National ...
in the
Brecon Beacons
The Brecon Beacons ( cy, Bannau Brycheiniog, ) are a mountain range in South Wales. In a narrow sense, the name refers to the range of Old Red Sandstone peaks which lie to the south of Brecon. Sometimes referred to as "the central Beacons" t ...
. It takes the form of an undulating plateau with steep slopes dropping away to the
Towy valley to the east and those of the
Gwenffrwd, Nant Melyn and
Afon Cothi
The Afon Cothi ( en, River Cothy) is the largest tributary of the River Tywi in south Wales. It is noted for its trout and sea trout (sewin) fishing
Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from th ...
to the north and west. Its highest point of 1516 feet or 462m at OS grid reference SN 723455 is surmounted by two
Bronze Age
The Bronze Age is a historic period, lasting approximately from 3300 BC to 1200 BC, characterized by the use of bronze, the presence of writing in some areas, and other early features of urban civilization. The Bronze Age is the second pri ...
cairns known as Crugiau Merched (which translates from
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 ...
as ''ladies' barrows'').
Caeo
Caio or ''Caeo'' is a village in the county of Carmarthenshire, south-west Wales, sited near to the Dolaucothi Gold Mines.
Location
It is located between Llandovery and Lampeter, north-east of the A482 that connects these two towns. Caio lies ...
Forest covers much of the southern flanks of the hill and smaller forests also cover its eastern slopes. Much of the native woodland consists of
sessile oak
''Quercus petraea'', commonly known as the sessile oak, Cornish oak, Irish Oak or durmast oak, is a species of oak tree native to most of Europe and into Anatolia and Iran. The sessile oak is the national tree of Ireland, and an unofficial embl ...
groves, especially on the valley sides. The human population is very low, being restricted to
hill farm
Hill farming or terrace farming is an extensive farming in upland areas, primarily rearing sheep, although historically cattle were often reared extensively in upland areas. Fell farming is the farming of fells, a fell being an area of unculti ...
s engaged in
sheep farming
Sheep farming or sheep husbandry is the raising and breeding of domestic sheep. It is a branch of animal husbandry. Sheep are raised principally for their meat (lamb and mutton), milk (sheep's milk), and fiber (wool). They also yield sheepskin an ...
, and some holiday cottages.
Geology
The geology of Mynydd Mallaen is complex, comprising
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. ...
s of the
Claerwen Group together with
sandstone
Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks.
Most sandstone is composed of quartz or feldspar (both silicates) ...
s of the Doethie and Glanyrafon Formations and the Caerau Mudstones Formation. Each of these
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 ...
rock formations is folded and faulted. Indeed it is an outcrop of
conglomerate
Conglomerate or conglomeration may refer to:
* Conglomerate (company)
* Conglomerate (geology)
* Conglomerate (mathematics)
In popular culture:
* The Conglomerate (American group), a production crew and musical group founded by Busta Rhymes
** Co ...
turbidite
A turbidite is the geologic deposit of a turbidity current, which is a type of amalgamation of fluidal and sediment gravity flow responsible for distributing vast amounts of clastic sediment into the deep ocean.
Sequencing
Turbidites were ...
rock on the western
limb
Limb may refer to:
Science and technology
*Limb (anatomy), an appendage of a human or animal
*Limb, a large or main branch of a tree
*Limb, in astronomy, the curved edge of the apparent disk of a celestial body, e.g. lunar limb
*Limb, in botany, ...
of the Cothi
Anticline
In structural geology, an anticline is a type of fold that is an arch-like shape and has its oldest beds at its core, whereas a syncline is the inverse of an anticline. A typical anticline is convex up in which the hinge or crest is the ...
which forms the summit of the hill.
Glacial till
image:Geschiebemergel.JPG, Closeup of glacial till. Note that the larger grains (pebbles and gravel) in the till are completely surrounded by the matrix of finer material (silt and sand), and this characteristic, known as ''matrix support'', is d ...
and
boulder clay
Boulder clay is an unsorted agglomeration of clastic sediment that is unstratified and structureless and contains gravel of various sizes, shapes, and compositions distributed at random in a fine-grained matrix. The fine-grained matrix consists ...
from the last
ice age
An ice age is a long period of reduction in the temperature of Earth's surface and atmosphere, resulting in the presence or expansion of continental and polar ice sheets and alpine glaciers. Earth's climate alternates between ice ages and gree ...
occupies some of the hollows on the plateau, and there are many stones and boulders of white
quartz
Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO4 silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical form ...
scattered across the plateau, perhaps the remains of
mineral vein
In geology, a vein is a distinct sheetlike body of crystallized minerals within a rock. Veins form when mineral constituents carried by an aqueous solution within the rock mass are deposited through precipitation. The hydraulic flow involved ...
s eroded away.
[British Geological Survey 1:50,000 scale geological map sheet (E&W series) 195 ''Lampeter'']
Archaeology
In addition to several
round barrow
A round barrow is a type of tumulus and is one of the most common types of archaeological monuments. Although concentrated in Europe, they are found in many parts of the world, probably because of their simple construction and universal purpose. ...
s, there are many
standing stone
A menhir (from Brittonic languages: ''maen'' or ''men'', "stone" and ''hir'' or ''hîr'', "long"), standing stone, orthostat, or lith is a large human-made upright rock (geology), stone, typically dating from the European middle Bronze Age. T ...
s on the plateau, two being very near to Cregiau Merched; one is named as Maen Bach.
Gold mining
Gold mining is the extraction of gold resources by mining. Historically, mining gold from alluvial deposits used manual separation processes, such as gold panning. However, with the expansion of gold mining to ores that are not on the surface ...
occurs on the south-eastern flank of the plateau, and was pioneered in the
Roman
Roman or Romans most often refers to:
*Rome, the capital city of Italy
*Ancient Rome, Roman civilization from 8th century BC to 5th century AD
*Roman people, the people of ancient Rome
*''Epistle to the Romans'', shortened to ''Romans'', a letter ...
period as soon as the area had been conquered ca 75 AD. The remains are visible at
Dolaucothi
The Dolaucothi Gold Mines (; cy, Mwynfeydd Aur Dolaucothi) (), also known as the Ogofau Gold Mine, are ancient Roman surface and underground mines located in the valley of the River Cothi, near Pumsaint, Carmarthenshire, Wales. The gold min ...
and traces of the
Roman aqueduct
The Romans constructed aqueducts throughout their Republic and later Empire, to bring water from outside sources into cities and towns. Aqueduct water supplied public baths, latrines, fountains, and private households; it also supported mining o ...
s can be seen on the neighbouring parts of the mountain. They tap both the
River Cothi
The Afon Cothi ( en, River Cothy) is the largest tributary of the River Tywi in south Wales. It is noted for its trout and sea trout (sewin) fishing
Fishing is the activity of trying to catch fish. Fish are often caught as wildlife from t ...
and
Afon Twrch, Carmarthenshire. The earlier earthen aqueduct shows several channels above the minehead, and tapped local springs. The channels led to water tanks above a single
opencast
Open-pit mining, also known as open-cast or open-cut mining and in larger contexts mega-mining, is a surface mining technique of extracting rock or minerals from the earth from an open-air pit, sometimes known as a borrow.
This form of mining ...
near to
Pumpsaint
Pumsaint is a village in Carmarthenshire, Wales, halfway between Llanwrda and Lampeter on the A482 road, A482 in the valley of the Afon Cothi. It forms part of the extensive estate of Dolaucothi, which is owned by the National Trust for Places of ...
on the south western flank of the plateau. A larger one tapped the Twrch higher up the valley. The Cothi aqueduct tapped the larger river about 7 miles upstream, and fed a large
reservoir
A reservoir (; from French ''réservoir'' ) is an enlarged lake behind a dam. Such a dam may be either artificial, built to store fresh water or it may be a natural formation.
Reservoirs can be created in a number of ways, including contro ...
at the minehead. Such tanks were used in
hushing
Hushing is an ancient and historic mining method using a flood or torrent of water to reveal mineral veins. The method was applied in several ways, both in prospecting for ores, and for their exploitation. Mineral veins are often hidden below ...
, a method of removing surface debris to find
gold
Gold is a chemical element with the symbol Au (from la, aurum) and atomic number 79. This makes it one of the higher atomic number elements that occur naturally. It is a bright, slightly orange-yellow, dense, soft, malleable, and ductile met ...
veins in the bedrock. They were also used for washing gold-bearing sand or other deposits, a form of
placer mining
Placer mining () is the mining of stream bed (Alluvium, alluvial) deposits for minerals. This may be done by open-pit mining, open-pit (also called open-cast mining) or by various surface excavating equipment or tunneling equipment.
Placer minin ...
or
hydraulic mining
Hydraulic mining is a form of mining that uses high-pressure jets of water to dislodge rock material or move sediment.Paul W. Thrush, ''A Dictionary of Mining, Mineral, and Related Terms'', US Bureau of Mines, 1968, p.560. In the placer mining of ...
, as well washing crushed ore on special gold washing tables. From dating evidence at Melin-y-Milwyr, a small reservoir above the minehead and the large
Roman fort
In the Roman Republic and the Roman Empire, the Latin word ''castrum'', plural ''castra'', was a military-related term.
In Latin usage, the singular form ''castrum'' meant 'fort', while the plural form ''castra'' meant 'camp'. The singular and ...
under
Pumpsaint
Pumsaint is a village in Carmarthenshire, Wales, halfway between Llanwrda and Lampeter on the A482 road, A482 in the valley of the Afon Cothi. It forms part of the extensive estate of Dolaucothi, which is owned by the National Trust for Places of ...
village, mining tailed off after 150 AD although some presence continued till circa 350 AD.
There was also a very large
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 cu ...
mine
Mine, mines, miners or mining may refer to:
Extraction or digging
* Miner, a person engaged in mining or digging
*Mining, extraction of mineral resources from the ground through a mine
Grammar
*Mine, a first-person English possessive pronoun
...
nearby to the north of the plateau at
Rhandirmwyn
Rhandirmwyn (or Rhandir-mwyn) is a small village in the north east of Carmarthenshire, Wales. Located in the upper Towy valley, 3 km north of Cilycwm village, it extends on both sides of the river. It lies in the parish of Llanfair-ar-y-bryn. ...
which was one of the largest in the world in the 1750s. There is also some evidence of earlier mining on a smaller scale at the head of the mine, at the
outcrop
An outcrop or rocky outcrop is a visible exposure of bedrock or ancient superficial deposits on the surface of the Earth.
Features
Outcrops do not cover the majority of the Earth's land surface because in most places the bedrock or superficial ...
of Pencerrig mwyn which may also be of Roman origin.
Wildlife
![Buzzard UK09](https://upload.wikimedia.org/wikipedia/commons/7/77/Buzzard_UK09.JPG)
There are numerous bird
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
present in the area, including large
birds of prey
Birds of prey or predatory birds, also known as raptors, are hypercarnivorous bird species that actively hunt and feed on other vertebrates (mainly mammals, reptiles and other smaller birds). In addition to speed and strength, these predators ...
s like the
red kite
The red kite (''Milvus milvus'') is a medium-large bird of prey in the family Accipitridae, which also includes many other diurnal raptors such as eagles, buzzards, and harriers. The species currently breeds in the Western Palearctic region o ...
,
common buzzard
The common buzzard (''Buteo buteo'') is a medium-to-large bird of prey which has a large range. A member of the genus ''Buteo'', it is a member of the family Accipitridae. The species lives in most of Europe and extends its breeding range across ...
,
raven
A raven is any of several larger-bodied bird species of the genus ''Corvus''. These species do not form a single taxonomic group within the genus. There is no consistent distinction between "crows" and "ravens", common names which are assigned t ...
,
kestrel
The term kestrel (from french: crécerelle, derivative from , i.e. ratchet) is the common name given to several species of predatory birds from the falcon genus ''Falco''. Kestrels are most easily distinguished by their typical hunting behaviour ...
and
carrion crow
The carrion crow (''Corvus corone'') is a passerine bird of the family Corvidae and the genus ''Corvus'' which is native to western Europe and the eastern Palearctic.
Taxonomy and systematics
The carrion crow was one of the many species origi ...
, as well as
songbird
A songbird is a bird belonging to the suborder Passeri of the perching birds (Passeriformes). Another name that is sometimes seen as the scientific or vernacular name is Oscines, from Latin ''oscen'', "songbird". The Passeriformes contains 500 ...
s such as the
skylark
''Alauda'' is a genus of larks found across much of Europe, Asia and in the mountains of north Africa, and one of the species (the Raso lark) endemic to the islet of Raso in the Cape Verde Islands. Further, at least two additional species are ...
, among many others. The red kite retreated to this area after intense persecution by
gamekeeper
A gamekeeper (often abbreviated to keeper), or in case of those dealing with deer (deer-)stalker, is a person who manages an area of countryside (e.g. areas of woodland, moorland, waterway or farmland) to make sure there is enough game for shoo ...
s in the rest of the country. There are
fox
Foxes are small to medium-sized, omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull, upright, triangular ears, a pointed, slightly upturned snout, and a long bushy tail (or ''brush'').
Twelve sp ...
es and
badger
Badgers are short-legged omnivores in the family Mustelidae (which also includes the otters, wolverines, martens, minks, polecats, weasels, and ferrets). Badgers are a polyphyletic rather than a natural taxonomic grouping, being united b ...
s especially in the woods and forests, and the local rivers are well stocked with
salmon
Salmon () is the common name for several list of commercially important fish species, commercially important species of euryhaline ray-finned fish from the family (biology), family Salmonidae, which are native to tributary, tributaries of the ...
,
trout
Trout are species of freshwater fish belonging to the genera '' Oncorhynchus'', ''Salmo'' and ''Salvelinus'', all of the subfamily Salmoninae of the family Salmonidae. The word ''trout'' is also used as part of the name of some non-salmoni ...
and
sewin
Sea trout is the common name usually applied to anadromous (sea-run) forms of brown trout (''Salmo trutta''), and is often referred to as ''Salmo trutta'' morpha ''trutta''. Other names for anadromous brown trout are sewin (Wales), peel or peal ...
. There is a wide distribution of
mammals
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or ...
such as
field vole
The short-tailed field vole, short-tailed vole, or simply field vole (''Microtus agrestis'') is a grey-brown vole, around 10 cm in length, with a short tail. It is one of the most common mammals in Europe, with a range extending from the Atl ...
s and
rabbit
Rabbits, also known as bunnies or bunny rabbits, are small mammals in the family Leporidae (which also contains the hares) of the order Lagomorpha (which also contains the pikas). ''Oryctolagus cuniculus'' includes the European rabbit speci ...
s as well as many
songbirds
A songbird is a bird belonging to the suborder Passeri of the perching birds (Passeriformes). Another name that is sometimes seen as the scientific or vernacular name is Oscines, from Latin ''oscen'', "songbird". The Passeriformes contains 500 ...
. The
skylark
''Alauda'' is a genus of larks found across much of Europe, Asia and in the mountains of north Africa, and one of the species (the Raso lark) endemic to the islet of Raso in the Cape Verde Islands. Further, at least two additional species are ...
is plentiful due to the extensive rough pasture present below the main peaks which allows ground nesting of the species. Pied
wagtails
Wagtails are a group of passerine birds that form the genus ''Motacilla'' in the family Motacillidae. The forest wagtail belongs to the monotypic genus ''Dendronanthus'' which is closely related to ''Motacilla'' and sometimes included therein. T ...
are common near the streams and torrents running from the hill tops.
The numerous
sessile oak
''Quercus petraea'', commonly known as the sessile oak, Cornish oak, Irish Oak or durmast oak, is a species of oak tree native to most of Europe and into Anatolia and Iran. The sessile oak is the national tree of Ireland, and an unofficial embl ...
groves along the sheltered hillsides host the
common bluebell
''Hyacinthoides non-scripta'' (formerly ''Endymion non-scriptus'' or ''Scilla non-scripta'') is a bulbous perennial plant, found in Atlantic areas from north-western Spain to the British Isles, and also frequently used as a garden plant. It is k ...
in the spring, as well as offering sanctuary to wildlife.
Access
The entire hill is mapped as
open country
"Open Country" is a designation used for some UK access land.
It was first defined under the National Parks and Access to the Countryside Act 1949 (and extended by the Countryside Act 1968), and was land over which an appropriate access agreeme ...
under the
Countryside and Rights of Way Act 2000
The Countryside and Rights of Way Act 2000 (c. 37), known informally as the CRoW Act or "Right to Roam" Act is a United Kingdom Act of Parliament affecting England and Wales which came into force on 30 November 2000.
Right to roam
The Act imp ...
so is freely available to those on foot. Additionally there is a
bridleway
A bridle path, also bridleway, equestrian trail, horse riding path, ride, bridle road, or horse trail, is a trail or a thoroughfare that is used by people riding horses, riding on horses. Trails originally created for use by horses often now s ...
which crosses the hill in an east-west direction and a further one approaching from the south. Large parts of the plateau is
peat bog
A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and muskeg; a ...
and wet underfoot, so care is needed in walking the top in the absence of clear footpaths. Apart from the two
standing stone
A menhir (from Brittonic languages: ''maen'' or ''men'', "stone" and ''hir'' or ''hîr'', "long"), standing stone, orthostat, or lith is a large human-made upright rock (geology), stone, typically dating from the European middle Bronze Age. T ...
s and large cairns, there are few obvious landmarks.
See also
*
Mynydd Epynt
Mynydd Epynt () is a former community and upland area in Powys, Wales.
The Ministry of Defence controversially evicted the community of Mynydd Epynt in 1940, creating what is now the core of the Sennybridge Training Area (SENTA), the largest mil ...
References
{{coord, 52.08, -3.84, type:mountain_region:GB, display=title
Mountains and hills of Carmarthenshire
Marilyns of Wales