Ancient Sites in The Rhondda ...

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Ancient Monuments in the Rhondda Valleys - by Ian Headford, Castle Street, Cwmparc.

The monuments that are included in this guide are all pre Dark Age.  The information is given in a chronological order.  All of the technical measurements are supplied by the books, “An Inventory of Ancient Monuments in Glamorgan, Vol. I, Part I: Stone Age and Bronze Age.” and, “An Inventory of Ancient Monuments in Glamorgan, Vol. I, Part II: Iron Age and Roman Occupation.” and the technical descriptions are taken from, 'R.C.H.M. Glamorgan Vol 1, Part 1 and Part 2' 

The two big lakes on the top left of the map represent the beginning of the two Rhondda valleys, namely Rhondda Fach and Fawr, right and left respectively. 

The valleys run nearly parallel in a south east direction.  The two valleys meet at Porth.

There are over 80 cairns on the hill tops of the two Rhondda valleys.  

A large number of  the cairns are classified as “Uncertain or destroyed” about a quarter counts as this.  

Most cairns that are featured in this guide are round cairns, unless otherwise stated, sites classed as ring cairns include cairn circles and are quite rare.  The platform cairn are rarer than the ring cairn. 

There are 10 cairn groups or cemeteries, half are dubious.  And 6 pre Dark Age settlements are contained in the Rhondda valleys, with a couple just outside the Rhondda but are included in the scope of this guide.  

Not all of the many sites mentioned above are included in this work.  All of the monuments that are listed in this guide are listed in the Inventories of Ancient Monuments in Glamorgan, with the exception of the Late Neolithic settlement of Cefn Glas.    

The earliest known monument in the Rhondda is a Mesolithic settlement on the mountain ridge of Craig y Llyn (SN 917 030). During forestry work on the ridge in the 1960’s, flint implements were found, along with the waste that creating such tools would make.  No settlement has been found but the vast number of finds make it probable that one existed. 

A Late Neolithic hut floor was discovered at Cefn Glas (SN 932 024).  Late Neolithic flints were found at this site.  Unfortunately the area now lies under afforested land.  

Garn Fach (SN 905 033) is a turf-covered mound that is 10.1m N-S by about 0.6m high.  It has a modern stack of stones on top. 

  

Carn Foesen (SN 908 029) is a damaged cairn about 9.1m in diameter and 0.6m high. 

 

On Hirwaun Common, Craig y Bwlch (SN 942 035) is 11m in diameter and 0.9m high. 

 

Craig y Bwlch shares a great view of the Brecon Beacons with Tarren y Bwlch, which is on the edge of a cliff.  This cairn measures 8.9m in diameter and is 1.2m high.  This cairn has a central hollow 2.5m in diameter and 0.4m deep.  The National Grid Reference is SN 948 034. 

 

The moorland ridge on Mynydd Tynewydd has Garn Bica (SN 943 005) on its summit.  This circular cairn is 10.4m in diameter and is 0.6m high.  A central hollow, 2.5m in diameter is an excavation hole. 

 

Garn Fach (SN 945 001) is 5.5m in diameter and 0.6m high.  The cairn might be natural. 

Close to the bridge at Lluest-wen, which is near the head of the Rhondda Fach valley, a disturbed cairn (SN 961 014) measures 11.9m in diameter and 0.9m high.  There is “crater” 3m in diameter in the centre. 

 

Garn Wen (SN 965 008) is found near the head of the Rhondda Fach valley.  The cairn is 7.6m in diameter and 0.4m high.  The cairn is very hard to find and it would be impossible if it were not for the boundary stone that is found near the centre. 

 

West of Blaenrhondda is Carn y Wiwer (SS 902 991).  It is roughly 7.6m in diameter and 0.3m high.  

 

A little further south is Bachgen Garreg (SS 908 981).  On a knoll the denuded cairn base is 12.2m long from north to south by 7.6m wide.  The cairn does not appear to be very high but from the SW its has a height of 0.9m.  There is a hole, which seems to have been the result of robbing

 

Further south again is the ring cairn Pebyll (SS 911 973).  The structure is oval and measures 24.7m long internally from NE to SW by 22.9m wide, the stony bank varies from 1.5m to 4m in width and up to 0.6m high.  There is a damaged entrance on the S 2.8m wide defined by leaning and recumbent slabs.  On the NW there is a smaller entrance.  In the bank on the SE there is a stone cist about 0.6m square. 

 

 

   

 

 

 

 

Near to Pebyll on the mountain summit is a cairn capped by an O.S. pillar.  The cairn is 7.6m in diameter and 0.6m high.  

The National Grid Reference is SS 906 974. 

 

The most impressive round cairn in the Rhondda is Crug yr Afan (SS 921 954).  It is located W of Cwmparc.  A ditch of 28.4m in diameter surrounds the cairn.  The ditch has a width of 1.8m at the top and 0.6m at the flat bottom and is cut 0.6m into the subsoil.  A berm 4m wide separates the ditch from a mound of clayey soil containing small slabs of stones, this is 20.5m in diameter and 0.9m high.  The top is flat and measures 13.5m in diameter.  A round cairn measuring 10m in diameter and 0.9m high is piled on top of the clayey mound. 

 

There is a cairn in between the defences of the Iron Age hillfort of Maendy Camp in Cwmparc (SS 957 955).  

The cairn is about 9.1m east-west by 6.1m, and 0.3m high.  A hole in the centre is 1.8m in diameter. 

 

Tarren Maerdy I (SS 979 972) is 7.6m in diameter and 0.6m high. 

A damaged cist is at the centre 1.4m long from E to W and 0.9m wide and 0.8m deep. 

 

Tarren Maerdy II (SS 981 971) is 8.2m in diameter and 0.4m high.  

A shallow depression at its centre contains a damaged cist.  

The capstone 2.1m long by 1.2m wide by 23cm thick lies across the depression. 

 

An extension of Cefn Rhondda, Mynydd Tyntyle is level moorland and the cairns are found just north of the summit.

The first cairn (SS 993 963) is 5.8m in diameter and 0.3m high.  There is a small central hollow. 

 

The next cairn (SS 993 964) is a platform cairn and is found 17m north of the previous cairn.  

The cairn is 14.3m in diameter and 0.4m high.  The centre is slightly “dished”. 

 

Although Carn yr Hyrddod (SS 920 934) is situated slightly outside the Rhondda, it is included here because it is easily accessed from the Bwlch mountain road from Cwmparc to Blaengwynfi and many of the surrounding cairns can be seen from its summit.  The cairn is 15.5m in diameter and 0.9m high. 

 

The ring cairn on Tarren Felen Uchaf (SS 947 948) is found S of Cwmparc.  

The ring bank is 9.1m in diameter and 2.1m wide and 15cm high. 

 

Between Nant-y-moel and Tonpentre, there is a moorland ridge called Mynydd Ton.  

The first cairn (SS 947 939) is 10.7m in diameter and 0.6m high. 

 

The second cairn (SS 949 941) is 10.4m in diameter and 0.6m high. 

 

Between Price Town and Clydach Vale is Mynydd William Meyrick.  Garn Fawr (SS 952 927) is 18.9m in diameter and 0.6m high.  The cairn has been very disturbed.  A triangulation pillar is set into the cairn and two modern cairns are contained within its diameter, one larger than the other.  Near the south side is an upright slab, which may be what remains of a cist. 

 

Garn Fach (SS 957 917) is 11.6m in diameter and 0.4m high.  The top was originally flat which suggests that this cairn may be a platform cairn.  The centre is slightly hollowed out.  The ground slopes to the south. 

 

Between Blaenclydach and Ystrad Rhondda is Mynydd y Gelli.  The cairn circle (SS 975 940) called the ‘Rhondda Stonehenge’ consists of small slabs enclosing a ring measuring 10.7m NW – SE by 9.1m.  Nine of the slabs survive and there may have originally been fifteen.  The slabs measure 0.6m sq and 8-15cm thick.  A hole found 3.7m from the centre was probably once a cist. 

 

A platform cairn 31m south east of the ‘Rhondda Stonehenge’ consists of a kerb of blocks enclosing a level platform 6m in diameter. 

 

South of Tonypandy is Mynydd Pen-y-graig (SS 988 912) it has fine views in all directions except the south west.  The mound is 5.2m in diameter and 25cm high.  A cist at the centre is square, 1.1m each way.  

Carn y Pigwn (ST 012 974) is found east of Ferndale.  The cairn is 11.3m in diameter and 0.6m high. 

The cairn found at the south end of Cefn Gwyngul is east of Ynys-hir (ST 036 929) it is 14.6m in diameter and 0.3m high. 

  A modern wall divides the cairn in half travelling east to west.

Craig y Pant (SN 896 036) is damaged by forestry.  It is 10.7m NW – SE and 0.9m high. 

 

Foel Chwern (SN 898 039) is made of small slabs and turf-covered, it is 7.3m in diameter and 0.6m high. 

 

Not all cairns are man-made or intended for burial.  So called ‘walkers-cairns’ are tricky, they can be relatively modern or may mark the spot where a genuine Bronze Age cairn once existed or they could be way-marks on old trackways.

Garn Goch (SN 905 016) is a marker on a ridge-way route. 

 

Another type of cairn is natural terrain that could be mistaken as sepulchral.

Carn Eiddil (SS 972 997) found on the Rhondda Fach side of the road from Maerdy to Aberdare, is considered to be a natural outcrop. 

 

Classed under probably sepulchral, is a group of cairns in Maendy Camp (SS 957 955) in Cwmparc.  Nine small mounds scatter the end of this spur.  The mounds consist of three ‘scoop-graves’ being 3m long by 1.5m wide and 0.2m high.  Low turf-covered irregular cairns make up the remaining six.  They measure 2.5m in diameter and 0.2m high.  Here is a scoop-grave from the site. 

 

Originally designated as doubtfully sepulchral, the cairn group found at Carn y Wiwer (ST 026 943) is now thought to be probably sepulchral.  Found north east of Wattstown are 19 mounds.  They are all roughly circular and are on average 0.3m high but their diameters vary.  

 

The picture above is one of the larger cairns.  In the picture below the cairn is a smaller example. 

 

Included for completeness is the cairn group on Mynydd y Gelli (SS 976 942).  This group is classed as non-sepulchral.  Mynydd y Gelli is south of Ystrad Rhondda.  The site comprises of nine small heaps of stones that measure 3 to 5m in diameter and less than 0.5m high.  They are generally in the form of the cairn in the picture below. 

 

Maendy Camp (SS 957 955) is an Iron Age hill-fort.  It is classed as being a Multivallate Enclosure with Wide-Spaced Ramparts.  The camp is 1.5km south of Treorci.  All sides are steep except the west.  The area encompassed by the camp is 0.9ha, the central enclosure is 0.2ha.  A stony bank forms the inner enclosure, which measures 6m wide and 0.6m high.  In the south east is the entrance, which is 7.5m wide, a post hole was found at this position.  The outer rampart is best preserved on the west, measurements being 9m wide and 1.5m high.  On the south the bank curves inwards to form an entrance about 4.5m long and 2.7m wide.  Excavations revealed a pavement of stones, 2.7m wide and extending 11m.  There might have been another entrance in the north.  Below is a picture of the inner rampart on the west side. 

 

A Roman Marching Camp at Twyn y Briddallt (ST 001 982) is north of Ferndale and follows the top of a ridge.  The bank and ditch measures 5.5m wide and 0.9m high.  Usually Roman marching camps used geometrical regularity but this site takes advantage of the form of the ground.  The enclosure measures 402m NW – SE and 183m wide, the overall area measures 7.3 hectares.  The entrances are placed on the NW and NE and are formed by a bank 3.6m wide and 0.6m high.  On the ground there is not much to see, just a field. but the camp can be appreciated for its size and positioning. 

Huts and enclosures above Garreg Lwyd (SN 923 019) over look the head of the Rhondda Fawr.  Two groups of irregular enclosures with round huts, most of which are between 2.5m and 3.5m in diameter, make up the site.  The larger group has 12 or 13 round huts with two pairs of rectangular enclosures.  The walls stand a metre high and are 1.2m thick and are made up of rubble faced partly with laid stones and orthostats.  

 

The exact date of the site is uncertain, the most likely time period is the Roman occupation.  

Below is a picture of an enclosure taken from the north and facing the Rhondda Fawr valley.  

The mountain in the background is Pen Pych. 

 

The hut settlement at Hen Dre’r Gelli (SS 976 942) is found a kilometre south of Ystrad.  The remains of a round house 10m in diameter with a wall 1.3 to 1.7m thick was found.  The entrance was at the south and a crecentric annexe 2.5m wide outside the wall on the north.  NNE from this hut, about 80m away, is a low bank 2m wide, two straight sections meet in an angle.  This bank concealed the foundations of a massive wall.  A round hut was discovered at this spot.  The site is now under the tip.  The pottery found dates the site, coarse grey Romano-British ware, of 2nd or 3rd century. 

 

Padell y Bwlch (SN 944 035) is 2km south of Hirwaun.  The settlement is found at the foot of a cliff.  Many parts of the enclosure have been adopted as sheep shelters and as a result the settlement is much ruined.  There are a couple of ruined huts, two measure 3.7m sq, a ruined foundation of a rectangular building measuring 10.7m long by 2.7m and another rectangular hut 7.3m long by 2.4m.  The area enclosed by the settlement is quite big, only an aerial photograph would do the site justice. 

 

 

Four huts lie below Tarren y Bwlch (SN 951 035) on a steep north-facing slope.  The huts are found 600m E of Padell y Bwlch and 20m higher.  This site along with Padell y Bwlch seem to be designed with easy access to the mountain ridges.  Hut 1 is 5m long by 3.3m wide.  Hut 2 is built against hut 3 and is 3.7m long by 3m long.  Hut 3 is the main structure, oval, 3.3m wide and 2.7m long.  Hut 4 is 4.3m long by 3.3m wide, walls being 1m wide and 0.5m high.  Pictured below are two of the huts. 

 

On Mynydd Cefnygyngon (SN 957 034) are more huts and enclosures.  Later structures have confused the layout of this site but where best preserved the walls of the main enclosure are 3m thick and 0.5m high.  A hut lies at the S end of the enclosure and measures 3.7m in diameter.  The remaining structures are scattered to the east and north of the main enclosure.  Most has been reused as shelters, hafodai and lambing pens.  There are about sixteen huts all mostly made of walls 1m thick, of thin laid slabs, and have a height of about 0.3m or less. 

 

This site along with the above two, namely Padell y Bwlch and Tarren y Bwlch are dated at the time of the Roman occupation, these settlements could have been in use for some time before the accepted date of the site. 

These kind of hut settlements are concentrated in a particular part of Glamorgan, namely Rhondda and Aberdare.  Garreg Lwyd at Blaenrhondda, Padell y Bwlch, Tarren y Bwlch, Mynydd Cefngyngon, Buarth Maen (not detailed here, in Llwydcoed, Aberdare) and Hen Dre’r Gelli  are unique in Glamorgan.   

The following complete inventory of sites and monuments are taken from Paul R. Davis ‘Historic Rhondda’.   

* indicates that a picture of the site or monument is included in this work. 

Round Cairns

Craig Y Pant 

SN 895 036*  

Foel Chwern 

SN 898 038*

Garn Fach 

SN 907 032*

Garn Foesen 

SN 907 029*

Mynydd Blaenrhondda 

SN 918 011

Craig Y Bwlch 

SN 941 035*

Carn Bica 

SN 942 005*

Carn Fach 

SN 945 001

Twyn Rhondda Fach

SN 946 023

Tarren Y Bwlch 

SN 948 033*

Pont Lluest-Wen 

SN 960 014*

Carn Y Wiwer

SS 902 990*

Mynydd Blaengwynfi

SS 906 973

Crug Yr Afan 

SS 920 954*

Mynydd Ton I 

SS 948 939*

Mynydd Ton II 

SS 949 940*

Mynydd Ton III 

SS 949 941

Maendy Camp 

SS 956 954*

Rhondda Stonehenge

SS 976 939

Mynydd Y Gelli 

SS 978 938

Mynydd Y Gelli  

SS 979 941

Tarren Maerdy I 

SS 979 971*

Tarren Maerdy II 

SS 980 971*

Llwynypia Mountain I

SS 980 936

Llwynypia Mountain II

 SS 981 936

Mynydd Yr Eglwys I 

SS 981 963

Mynydd Yr Eglwys II 

SS 981 964

Mynydd Penygraig I 

SS 986 908*

Mynydd Penygraig II 

SS 987 911

Mynydd Tyntyle II 

SS 992 964*

Mynydd Tyntyle III 

SS 992 963

Twyn Y Briddallt 

ST 000 984

Mynydd Brith-Weunydd I 

ST 002 926

Mynydd Brith-Weunydd II 

ST 008 928

Carn Y Pigwrn 

ST 011 974*

Cefn Gwyngul 

ST 036 929

 

 

 

 

 

Platform Cairns

Garn Fach 

SS 957 917*

Rhondda Stonehenge 

SS 976 939*

Mynydd Tyntyle III 

SS 992 963* 

Ring Cairns

Tarren Bwllfa 

SN 961 021

Carn Wen 

SN 964 008*

Pebyll 

SS 910 972*

Tarren Felen-Uchaf 

SS 948 947*

Rhondda Stonehenge 

SS 976 939*

Mynydd Penygraig I 

SS 986 908

 

Uncertain or Destroyed Cairns

Carn Goch 

SN 905 017

Bryn Bach 

SN 905 003

Garn Foesen I 

SN 909 030

Garn Foesen II 

SN 911 030

Nant Drysiog 

SN 925 016

Cawrnant Y Fforch 

SN 958 006

Tarren Bwllfa 

SN 960 018

Carn Bryn Du 

SS 902 993

Bryn-Du 

SS 906 998

Carn Saer 

SS 907 985

Bachgen Carreg 

SS 908 980* (Not sure why this is listed here!)

Craig Fach 

SS 928 952

Craig Ogwr 

SS 935 949

Craig Y Geifr 

SS 949 934

Garn Fawr 

SS 952 927

Nant Y Calch 

SS 954 998

Maendy Mountain 

SS 958 955

Mynydd Yr Eglwys 

SS 978 962

Mynydd Disgwylfa 

SS 978 912

Carn Y Celyn 

SS 986 905

Mynydd Tyntyle I 

SS 987 968

Twyn Disgwylfa 

SS 996 959

Disgwylfa 

SS 997 900

Penrhys I 

ST 000 949

Penrhys II 

ST 001 949

Mynydd Brith-Weunydd

ST 009 928

Tylorstown 

ST 009 926

Mynydd Dinas 

ST 009 906

Mynydd Troed-Y-Rhiw

ST 014 928

Cefn Gwyngul 

ST 034 925*

 

Cairn Groups

Cefn Yr Esgyrn 

SN 992 024 (?)

Cawrnant Y Fforch 

SN 961 005

Gelli Goch 

SS 940 974

Maendy Camp 

SS 957 954*

Hen Dre'r Gelli 

SS 976 942*

Mynydd Yr Eglwys

SS 981 964

Tarren Maerdy 

SS 978 971

Erw Beddau 

SS 999 952

Mynydd Dinas 

ST 007 914 and 008 913

Carn Y Wiwer 

ST 027 942*

 

Settlements

Hen Dre'r Mynydd 

SN 923 019*

Padell Y Bwlch 

SN 945 036*

Cefn Gyngon 

SN 956 034*

Maendy Camp 

SS 957 955*

Hen Dre'r Gelli 

SS 977 941*

Twyn Y Briddallt 

ST 001 982*  

* indicates that a picture of the site or monument is included in this work. 

THE END 


View of Llwyn-y-pia from Cwm Bodringallt, Ystrad.

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