List of scheduled monuments in Merthyr Tydfil County Borough

Merthyr Tydfil County Borough has 43 scheduled monuments. The prehistoric scheduled sites include many burial cairns and several defensive enclosures. The Roman period is represented by a Roman Road. The medieval periods include two inscribed stones, several house platforms and two castle sites. Finally the modern period has 14 sites, mainly related to Merthyr's industries, including coal mining, transportation and iron works. Almost all of Merthyr Tydfil was in the historic county of Glamorgan, with several of the northernmost sites having been in Brecknockshire.

Scheduled monuments have statutory protection. The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales.^[1] The list of scheduled monuments below is supplied by Cadw^[2] with additional material from RCAHMW and Glamorgan-Gwent Archaeological Trust.

Main article: Lists of scheduled monuments in Wales

Scheduled monuments in Merthyr Tydfil County Borough

Image	Name	Site type	Community	Location	Details	Historic County	Period	SAM No & Refs
	Gelligaer Standing Stone	Standing stone	Bedlinog	51.7221°N 3.2994°W / 51.7221; -3.2994 (Gelligaer Common Standing Stone), SO103034	A 2 m (6.6 ft) high stone on open moorland. Probably Bronze Age and with the possible remains of a Bronze Age burial alongside. An inscription on the stone, now mostly illegible, is described as either post-Roman/Early Christian or Early Medieval.[3][4][5]	Glamorganshire	1.1 Prehistoric[4] Early Medieval[3]	GM221
	Coed Cae Round Cairns	Round cairn	Bedlinog	51.6892°N 3.3127°W / 51.6892; -3.3127 (Coed Cae Round Cairns), ST093997	Located in a cairnfield with at least 19 stony mounds, the scheduling consists of a group of eight Bronze Age burial cairns.[6][7]	Glamorganshire	1.3 Prehistoric[6] Bronze Age[8]	GM271
	Gelligaer Common Round Cairns	Round cairn	Bedlinog	51.7211°N 3.3007°W / 51.7211; -3.3007 (Gelligaer Common Round Cairns), SO102032	A group of eleven Bronze Age burial cairns.[9]	Glamorganshire	1.3 Prehistoric[9] Bronze Age[10][11]	GM220
	Carn Castell y Meibion ring cairn	Ring cairn	Troed-y-rhiw[12][13]	51.7185°N 3.3979°W / 51.7185; -3.3979 (Carn Castell y Meibion ring cairn), SO035031	A ring cairn, possibly dating to the Bronze Age, with an 8 m (26 ft) diameter and surrounded by a 3 m (9.8 ft) wide stony ring bank.[12][13][14]	Glamorganshire	1.3Prehistoric[14] Bronze Age[12][13]	GM586
	Brynbychan Round Cairn	Round cairn	Merthyr Vale,[15][16] (also Mountain Ash),[17] (see also Rhondda Cynon Taff)	51.6812°N 3.3564°W / 51.6812; -3.3564 (Brynbychan Round Cairn), ST063989	A Bronze Age circular cairn with a diameter of 18 m (59 ft). There is an OS triangulation pillar on the site.[15][16][17]	Glamorganshire	1.3Prehistoric[17] Bronze Age[15][16]	GM286
	Cefn Merthyr Round Cairns	Cairnfield	Merthyr Vale	51.6922°N 3.3287°W / 51.6922; -3.3287 (Cefn Merthyr Round Cairns), SO082001		Glamorganshire	1.3Prehistoric	GM272 [18]
	Morlais Hill ring cairn	Ring cairn	Pant	51.7774°N 3.3747°W / 51.7774; -3.3747 (Morlais Hill ring cairn), SO052096		Glamorganshire	1.3Prehistoric	GM563 [19]
	Tir Lan round barrow cemetery	Round barrow	Treharris	51.6857°N 3.31°W / 51.6857; -3.31 (Tir Lan round barrow cemetery), ST095993	The remains of six Bronze Age round barrows, three to the north-west and three to the south-east of Tir Lan farm. All six remain substantially intact despite being reduced by ploughing in the past.[20]	Glamorganshire	1.3Prehistoric[20]	GM270 [21]
	Garn Las Earthwork	Round cairn	Troed-y-rhiw, (also Aberdare), (see also Rhondda Cynon Taf)	51.7248°N 3.4073°W / 51.7248; -3.4073 (Garn Las Earthwork), SO028038	The remains a circular burial cairn measuring 14 m (46 ft) in diameter, probably dating to the Bronze Age.[22]	Glamorganshire	1.3 Prehistoric[22] Bronze Age[23][24]	GM236
	Merthyr Common Round Cairns	Round cairn	Troed-y-rhiw	51.7295°N 3.3357°W / 51.7295; -3.3357 (Merthyr Common Round Cairns), SO078042	A group of six Bronze Age burial cairns ranging from 5 to 19 m (16 to 62 ft) in diameter.[25]	Glamorganshire	1.3Prehistoric[25]	GM222 [21]
	Carn Ddu platform cairn	Platform Cairn	Vaynor	51.8037°N 3.3998°W / 51.8037; -3.3998 (Carn Ddu platform cairn), SO035125		Glamorganshire	1.3Prehistoric	GM570 [26]
	Cefn Cil-Sanws ring cairn	Ring cairn	Vaynor	51.7875°N 3.4162°W / 51.7875; -3.4162 (Cefn Cil-Sanws ring cairn), SO024108		Glamorganshire	1.3Prehistoric	GM567 [27]
	Cefn Cil-Sanws, Cairn on SW side of	Round Cairn	Vaynor	51.7785°N 3.4147°W / 51.7785; -3.4147 (Cefn Cil-Sanws, Cairn on SW side of), SO024098		Brecknockshire	1.3Prehistoric	GM599 [28]
	Coetgae'r Gwartheg barrow cemetery	Round cairn	Vaynor	51.7935°N 3.419°W / 51.7935; -3.419 (Coetgae'r Gwartheg barrow cemetery), SO022114		Glamorganshire	1.3Prehistoric	GM568 [29]
	Garn Pontsticill ring cairn	Ring cairn	Vaynor	51.7966°N 3.375°W / 51.7966; -3.375 (Garn Pontsticill ring cairn), SO052117		Glamorganshire	1.3Prehistoric	GM569 [30]
	Dyke 315m E of Tyla-Glas	Ditch	Bedlinog	51.7033°N 3.2876°W / 51.7033; -3.2876 (Dyke 315m E of Tyla-Glas), SO111012	The remains of a later prehistoric/medieval dyke with a clearly defined bank and ditch running east-west across a ridge top. The 3 m (9.8 ft) wide ditch is 1.5 m (4.9 ft) deep at its east end.[31]	Glamorganshire	1.5Prehistoric[31]	GM260 [21]
	Cefn Cil-Sanws Defended Enclosure	Enclosure - Defensive	Vaynor	51.7796°N 3.4105°W / 51.7796; -3.4105 (Cefn Cil-Sanws Defended Enclosure), SO027099		Brecknockshire	1.5Prehistoric	GM600 [32]
	Enclosure East of Nant Cwm Moel	Enclosure - Defensive	Vaynor	51.7922°N 3.394°W / 51.7922; -3.394 (Enclosure East of Nant Cwm Moel), SO039113		Glamorganshire	1.5Prehistoric	GM518 [33]
	Enclosure on Coedcae'r Ychain	Enclosure - Defensive	Vaynor	51.7915°N 3.4167°W / 51.7915; -3.4167 (Enclosure on Coedcae'r Ychain), SO023112		Glamorganshire	1.5Prehistoric	GM519 [34]
	Gelligaer Common Roman Road	Road	Bedlinog	51.7226°N 3.3007°W / 51.7226; -3.3007 (Gelligaer Common Roman Road), SO102034		Glamorganshire	2Roman	GM556 [35]
	Nant Crew Inscribed Stone (now in St John's Church, Cefn Coed )	Standing stone	Vaynor	51.7628°N 3.4035°W / 51.7628; -3.4035 (Nant Crew Inscribed Stone (now in Cefn Coed Church)), SO032081	A 1.5 m (5 ft) high square-sectioned pillar stone thought to date to the Bronze Age. A Latin inscription on the west face and cross incised on the north face are from the 6th and 7th-9th centuries. Holes in the stone indicate that it had been used as a gatepost.[36][37][38]	Brecknockshire	3Early Medieval[37]	BR145
	Platform Houses and Cairn Cemetery on Dinas Noddfa	House platforms (& Cairnfield)	Bedlinog	51.7195°N 3.3132°W / 51.7195; -3.3132 (Platform Houses and Cairn Cemetery on Dinas Noddfa), SO093031	Medieval house platforms, also prehistoric cairnfield	Glamorganshire	4Medieval	GM314 [39]
	Platform Houses on Coly Uchaf	Platform house	Bedlinog	51.7112°N 3.3161°W / 51.7112; -3.3161 (Platform Houses on Coly Uchaf), SO091022		Glamorganshire	4Medieval	GM320 [40]
	Morlais Castle	Castle	Pant	51.7768°N 3.3789°W / 51.7768; -3.3789 (Morlais Castle), SO049095	The collapsed remains of a castle begun in 1288 by Gilbert de Clare, Lord of Glamorgan. The walls enclosed an area of approximately 130 by 60 m (430 by 200 ft). It was captured during the 1294-95 rebellion of Madog ap Llywelyn and may have been abandoned shortly afterwards.[41][42][43][44]	Glamorganshire	4Medieval[43]	GM028
	Cae Burdydd Castle	Motte	Vaynor	51.7824°N 3.3823°W / 51.7824; -3.3823 (Cae Burdydd Castle), SO047102	A 3 m (9.8 ft) high motte and ditch dating to the medieval period. The diameter of 23 m (75 ft) narrows to 9 m (30 ft) at the top.[45][46][47]	Brecknockshire	4Medieval[46]	BR118
	Cefn Car settlement	Building (Unclassified)	Vaynor	51.8084°N 3.4256°W / 51.8084; -3.4256 (Cefn Car settlement), SO018131		Glamorganshire	4Medieval	GM571 [48]
	Gurnos Quarry Tramroad & Leat	Industrial monument	Gurnos	51.7624°N 3.4002°W / 51.7624; -3.4002 (Gurnos Quarry Tramroad & Leat), SO034080		Glamorganshire	5Post-Medieval/Modern	GM478 [49]
	Sarn Howell Pond and Watercourses	Pond	Town	51.7471°N 3.3241°W / 51.7471; -3.3241 (Sarn Howell Pond and Watercourses), SO086062		Glamorganshire	5Post-Medieval/Modern	GM494 [50]
	Abercanaid egg-ended boiler	Egg-ended Boiler, re-purposed as garden shed	Troed-y-rhiw	51.7248°N 3.3679°W / 51.7248; -3.3679 (Abercanaid egg-ended boiler), SO056037		Glamorganshire	5Post-Medieval/Modern	GM572 [51][52]
	Cyfarthfa Canal Level	Canal Level	Cyfarthfa	51.7388°N 3.3876°W / 51.7388; -3.3876 (Cyfarthfa Canal Level), SO042053		Glamorganshire	5.7Post-Medieval/Modern	GM467 [53]
	Cyfarthfa Tramroad Section at Heolgerrig	Tramroad	Cyfarthfa	51.7462°N 3.4044°W / 51.7462; -3.4044 (Cyfarthfa Tramroad Section at Heolgerrig), SO031062		Glamorganshire	5.7Post-Medieval/Modern	GM495 [54]
	Iron Ore Scours and Patch Workings at Winch Fawr, Merthyr Tydfil	Iron mine	Cyfarthfa	51.752°N 3.4241°W / 51.752; -3.4241 (Iron Ore Scours and Patch Workings at Winch Fawr, Merthyr Tydfil), SO017068		Glamorganshire	5.7Post-Medieval/Modern	GM554 [55]
	Ynys Fach Iron Furnaces	Industrial monument	Cyfarthfa	51.745°N 3.3841°W / 51.745; -3.3841 (Ynys Fach Iron Furnaces), SO045060		Glamorganshire	5.7Post-Medieval/Modern	GM331 [56]
	Penydarren Tram Road	Trackway	Merthyr Vale	51.6707°N 3.3304°W / 51.6707; -3.3304 (Penydarren Tram Road), ST080977		Glamorganshire	5.7Post-Medieval/Modern	GM359 [57]
	Iron Canal Bridge from Rhydycar	Bridge	Park	51.7504°N 3.3857°W / 51.7504; -3.3857 (Iron Canal Bridge from Rhydycar), SO044066		Glamorganshire	5.7Post-Medieval/Modern	GM486 [58]
	Pont-y-Cafnau tramroad bridge	Bridge	Park	51.7546°N 3.3956°W / 51.7546; -3.3956 (Pont y Cafnau Tramroad Bridge), SO037071	An ironwork bridge spanning the River Taff constructed in 1793. The name, meaning "bridge of troughs", comes from its unusual three tier design of a tramroad between two watercourses, one beneath the bridge deck and the other on an upper wooden structure which is no longer present. Pont-y-Cafnau is also Grade II* listed.[59][60][61][62]	Glamorganshire	5.7 Post-Medieval/Modern[61] Post-Medieval[62][63]	GM424
	Merthyr Tramroad: Morlais Castle section	Tramroad	Pant	51.7786°N 3.3826°W / 51.7786; -3.3826 (Merthyr Tramroad: Morlais Castle section), SO047097		Glamorganshire	5.75Post-Medieval/Modern	GM594 [64]
	Merthyr Tramroad Tunnel (Trevithick's Tunnel)	Tramroad	Troed-y-rhiw	51.7349°N 3.3686°W / 51.7349; -3.3686 (Merthyr Tramroad Tunnel (Trevithick's Tunnel)), SO055049		Glamorganshire	5.75Post-Medieval/Modern	GM573 [65]
	Cwmdu Air Shaft & Fan	Air Shaft	Cyfarthfa	51.7371°N 3.4039°W / 51.7371; -3.4039 (Cwmdu Air Shaft & Fan), SO031051		Glamorganshire	5.8Post-Medieval/Modern	GM460 [66]
	Remains of Blast Furnaces, Cyfarthfa Ironworks	Blast Furnace	Park	51.7521°N 3.3952°W / 51.7521; -3.3952 (Remains of Blast Furnaces, Cyfarthfa Ironworks), SO037068		Glamorganshire	5.8Post-Medieval/Modern	GM425 [67]
	Tai Mawr Leat for Cyfarthfa Iron Works	Leat	Park	51.7586°N 3.4046°W / 51.7586; -3.4046 (Tai Mawr Leat for Cyfarthfa Iron Works), SO031076		Glamorganshire	5.8Post-Medieval/Modern	GM479 [68]
	Deserted Iron Mining Village, Ffos-y-fran	Industrial monument	Troed-y-rhiw	51.742°N 3.3463°W / 51.742; -3.3463 (Deserted Iron Mining Village, Ffos-y-fran), SO071056		Glamorganshire	5.8Post-Medieval/Modern	GM496 [69]

Scheduled monuments in Merthyr Tydfil, Wales.
=Prehistoric =Roman =Early Medieval
=Medieval =Post-Medieval/Modern

See also

• Grade I listed buildings in Merthyr Tydfil County Borough
• Grade II* listed buildings in Merthyr Tydfil County Borough
• List of Cadw properties
• List of castles in Wales
• List of hill forts in Wales
• Historic houses in Wales
• List of monastic houses in Wales
• List of museums in Wales
• List of Roman villas in Wales