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.

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°43′20″N 3°17′58″W / 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
  • Prehistoric[4]
  • Early Medieval[3]
 GM221
Coed Cae Round Cairns Round cairn Bedlinog 51°41′21″N 3°18′46″W / 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
GM271
Gelligaer Common Round Cairns Round cairn Bedlinog 51°43′16″N 3°18′03″W / 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
GM220
Carn Castell y Meibion ring cairn Ring cairn Troed-y-rhiw[12][13] 51°43′07″N 3°23′52″W / 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 Prehistoric[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°40′52″N 3°21′23″W / 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 Prehistoric[17]
Bronze Age[15][16]		 GM286
Cefn Merthyr Round Cairns Cairnfield Merthyr Vale 51°41′32″N 3°19′43″W / 51.6922°N 3.3287°W / 51.6922; -3.3287 (Cefn Merthyr Round Cairns),
SO082001		 Glamorganshire Prehistoric
 GM272
[18]
Morlais Hill ring cairn Ring cairn Pant 51°46′39″N 3°22′29″W / 51.7774°N 3.3747°W / 51.7774; -3.3747 (Morlais Hill ring cairn),
SO052096		 Glamorganshire Prehistoric
 GM563
[19]
Tir Lan round barrow cemetery Round barrow Treharris 51°41′09″N 3°18′36″W / 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 Prehistoric[20] GM270
[21]
Garn Las Earthwork Round cairn Troed-y-rhiw, (also Aberdare), (see also Rhondda Cynon Taf) 51°43′29″N 3°24′26″W / 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
GM236
Merthyr Common Round Cairns Round cairn Troed-y-rhiw 51°43′46″N 3°20′09″W / 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 Prehistoric[25] GM222
[21]
Carn Ddu platform cairn Platform Cairn Vaynor 51°48′13″N 3°23′59″W / 51.8037°N 3.3998°W / 51.8037; -3.3998 (Carn Ddu platform cairn),
SO035125		 Glamorganshire Prehistoric
 GM570
[26]
Cefn Cil-Sanws ring cairn Ring cairn Vaynor 51°47′15″N 3°24′58″W / 51.7875°N 3.4162°W / 51.7875; -3.4162 (Cefn Cil-Sanws ring cairn),
SO024108		 Glamorganshire Prehistoric
 GM567
[27]
Cefn Cil-Sanws, Cairn on SW side of Round Cairn Vaynor 51°46′43″N 3°24′53″W / 51.7785°N 3.4147°W / 51.7785; -3.4147 (Cefn Cil-Sanws, Cairn on SW side of),
SO024098		 Brecknockshire Prehistoric
 GM599
[28]
Coetgae'r Gwartheg barrow cemetery Round cairn Vaynor 51°47′37″N 3°25′08″W / 51.7935°N 3.419°W / 51.7935; -3.419 (Coetgae'r Gwartheg barrow cemetery),
SO022114		 Glamorganshire Prehistoric
 GM568
[29]
Garn Pontsticill ring cairn Ring cairn Vaynor 51°47′48″N 3°22′30″W / 51.7966°N 3.375°W / 51.7966; -3.375 (Garn Pontsticill ring cairn),
SO052117		 Glamorganshire Prehistoric
 GM569
[30]
Dyke 315m E of Tyla-Glas Ditch Bedlinog 51°42′12″N 3°17′15″W / 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 Prehistoric[31] GM260
[21]
Cefn Cil-Sanws Defended Enclosure Enclosure - Defensive Vaynor 51°46′47″N 3°24′38″W / 51.7796°N 3.4105°W / 51.7796; -3.4105 (Cefn Cil-Sanws Defended Enclosure),
SO027099		 Brecknockshire Prehistoric
 GM600
[32]
Enclosure East of Nant Cwm Moel Enclosure - Defensive Vaynor 51°47′32″N 3°23′38″W / 51.7922°N 3.394°W / 51.7922; -3.394 (Enclosure East of Nant Cwm Moel),
SO039113		 Glamorganshire Prehistoric
 GM518
[33]
Enclosure on Coedcae'r Ychain Enclosure - Defensive Vaynor 51°47′29″N 3°25′00″W / 51.7915°N 3.4167°W / 51.7915; -3.4167 (Enclosure on Coedcae'r Ychain),
SO023112		 Glamorganshire Prehistoric
 GM519
[34]
Gelligaer Common Roman road Gelligaer Common Roman Road Road Bedlinog 51°43′21″N 3°18′03″W / 51.7226°N 3.3007°W / 51.7226; -3.3007 (Gelligaer Common Roman Road),
SO102034		 Glamorganshire Roman
 GM556
[35]
Nant Crew Inscribed Stone (now in St John's Church, Cefn Coed ) Standing stone Vaynor 51°45′46″N 3°24′13″W / 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 Early Medieval[37] BR145
Platform Houses and Cairn Cemetery on Dinas Noddfa House platforms (& Cairnfield) Bedlinog 51°43′10″N 3°18′48″W / 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 Medieval
 GM314
[39]
Platform Houses on Coly Uchaf Platform house Bedlinog 51°42′40″N 3°18′58″W / 51.7112°N 3.3161°W / 51.7112; -3.3161 (Platform Houses on Coly Uchaf),
SO091022		 Glamorganshire Medieval
 GM320
[40]
Morlais Castle Morlais Castle Castle Pant 51°46′36″N 3°22′44″W / 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 Medieval[43] GM028
Cae Burdydd Castle Cae Burdydd Castle Motte Vaynor 51°46′57″N 3°22′56″W / 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 Medieval[46] BR118
Cefn Car settlement Building (Unclassified) Vaynor 51°48′30″N 3°25′32″W / 51.8084°N 3.4256°W / 51.8084; -3.4256 (Cefn Car settlement),
SO018131		 Glamorganshire Medieval
 GM571
[48]
Gurnos Quarry Tramroad & Leat Industrial monument Gurnos 51°45′45″N 3°24′01″W / 51.7624°N 3.4002°W / 51.7624; -3.4002 (Gurnos Quarry Tramroad & Leat),
SO034080		 Glamorganshire Post-Medieval/Modern
 GM478
[49]
Sarn Howell Pond and Watercourses Pond Town 51°44′50″N 3°19′27″W / 51.7471°N 3.3241°W / 51.7471; -3.3241 (Sarn Howell Pond and Watercourses),
SO086062		 Glamorganshire Post-Medieval/Modern
 GM494
[50]
Abercanaid egg-ended boiler Egg-ended Boiler, re-purposed as garden shed Troed-y-rhiw 51°43′29″N 3°22′04″W / 51.7248°N 3.3679°W / 51.7248; -3.3679 (Abercanaid egg-ended boiler),
SO056037		 Glamorganshire Post-Medieval/Modern
 GM572
[51][52]
Cyfarthfa Canal Level Canal Level Cyfarthfa 51°44′20″N 3°23′15″W / 51.7388°N 3.3876°W / 51.7388; -3.3876 (Cyfarthfa Canal Level),
SO042053		 Glamorganshire Post-Medieval/Modern
 GM467
[53]
Cyfarthfa Tramroad Section at Heolgerrig Tramroad Cyfarthfa 51°44′46″N 3°24′16″W / 51.7462°N 3.4044°W / 51.7462; -3.4044 (Cyfarthfa Tramroad Section at Heolgerrig),
SO031062		 Glamorganshire Post-Medieval/Modern
 GM495
[54]
Iron Ore Scours and Patch Workings at Winch Fawr, Merthyr Tydfil Iron mine Cyfarthfa 51°45′07″N 3°25′27″W / 51.752°N 3.4241°W / 51.752; -3.4241 (Iron Ore Scours and Patch Workings at Winch Fawr, Merthyr Tydfil),
SO017068		 Glamorganshire Post-Medieval/Modern
 GM554
[55]
Ynys Fach Iron Furnaces Industrial monument Cyfarthfa 51°44′42″N 3°23′03″W / 51.745°N 3.3841°W / 51.745; -3.3841 (Ynys Fach Iron Furnaces),
SO045060		 Glamorganshire Post-Medieval/Modern
 GM331
[56]
Penydarren Tramway Penydarren Tram Road Trackway Merthyr Vale 51°40′15″N 3°19′49″W / 51.6707°N 3.3304°W / 51.6707; -3.3304 (Penydarren Tram Road),
ST080977		 Glamorganshire Post-Medieval/Modern
 GM359
[57]
Iron Canal Bridge from Rhydycar Bridge Park 51°45′01″N 3°23′09″W / 51.7504°N 3.3857°W / 51.7504; -3.3857 (Iron Canal Bridge from Rhydycar),
SO044066		 Glamorganshire Post-Medieval/Modern
 GM486
[58]
Pont y Cafnau iron tramroad bridge Pont-y-Cafnau tramroad bridge Bridge Park 51°45′17″N 3°23′44″W / 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
GM424
Merthyr Tramroad: Morlais Castle section Tramroad Pant 51°46′43″N 3°22′57″W / 51.7786°N 3.3826°W / 51.7786; -3.3826 (Merthyr Tramroad: Morlais Castle section),
SO047097		 Glamorganshire Post-Medieval/Modern
 GM594
[64]
Merthyr Tramroad Tunnel (Trevithick's Tunnel) Tramroad Troed-y-rhiw 51°44′06″N 3°22′07″W / 51.7349°N 3.3686°W / 51.7349; -3.3686 (Merthyr Tramroad Tunnel (Trevithick's Tunnel)),
SO055049		 Glamorganshire Post-Medieval/Modern
 GM573
[65]
Cwmdu Air Shaft & Fan Air Shaft Cyfarthfa 51°44′14″N 3°24′14″W / 51.7371°N 3.4039°W / 51.7371; -3.4039 (Cwmdu Air Shaft & Fan),
SO031051		 Glamorganshire Post-Medieval/Modern
 GM460
[66]
Cyfarthfa Iron Works Remains of Blast Furnaces, Cyfarthfa Ironworks Blast Furnace Park 51°45′08″N 3°23′43″W / 51.7521°N 3.3952°W / 51.7521; -3.3952 (Remains of Blast Furnaces, Cyfarthfa Ironworks),
SO037068		 Glamorganshire Post-Medieval/Modern
 GM425
[67]
Tai Mawr Leat for Cyfarthfa Iron Works Leat Park 51°45′31″N 3°24′17″W / 51.7586°N 3.4046°W / 51.7586; -3.4046 (Tai Mawr Leat for Cyfarthfa Iron Works),
SO031076		 Glamorganshire Post-Medieval/Modern
 GM479
[68]
Deserted Iron Mining Village, Ffos-y-fran Industrial monument Troed-y-rhiw 51°44′31″N 3°20′47″W / 51.742°N 3.3463°W / 51.742; -3.3463 (Deserted Iron Mining Village, Ffos-y-fran),
SO071056		 Glamorganshire Post-Medieval/Modern
 GM496
[69]
Merthyr Tydfil
Gelligaer Common Standing Stone
Coed Cae Round Cairns
Gelligaer Common Round Cairns
Carn Castell y Meibion ring cairn
Brynbychan Round Cairn
Cefn Merthyr Round Cairns
Morlais Hill ring cairn
Tir Lan round barrow cemetery
Garn Las Earthwork
Merthyr Common Round Cairns
Carn Ddu platform cairn
Cefn Cil-Sanws ring cairn
Cefn Cil-Sanws, Cairn on SW side of
Coetgae'r Gwartheg barrow cemetery
Garn Pontsticill ring cairn
Dyke 315m E of Tyla-Glas
Cefn Cil-Sanws Defended Enclosure
Enclosure East of Nant Cwm Moel
Enclosure on Coedcae'r Ychain
Gelligaer Common Roman Road
Nant Crew Inscribed Stone (now in Cefn Coed Church)
Platform Houses and Cairn Cemetery on Dinas Noddfa
Platform Houses on Coly Uchaf
Morlais Castle
Cae Burdydd Castle
Cefn Car settlement
Gurnos Quarry Tramroad & Leat
Sarn Howell Pond and Watercourses
Abercanaid haystack boiler
Cyfarthfa Canal Level
Cyfarthfa Tramroad Section at Heolgerrig
Iron Ore Scours and Patch Workings at Winch Fawr, Merthyr Tydfil
Ynys Fach Iron Furnaces
Penydarren Tram Road
Iron Canal Bridge from Rhydycar
Pont y Cafnau Tramroad Bridge
Merthyr Tramroad: Morlais Castle section
Merthyr Tramroad Tunnel (Trevithick's Tunnel)
Cwmdu Air Shaft & Fan
Remains of Blast Furnaces, Cyfarthfa Ironworks
Tai Mawr Leat for Cyfarthfa Iron Works
Deserted Iron Mining Village, Ffos-y-fran
Scheduled monuments in Merthyr Tydfil, Wales.
=Prehistoric =Roman =Early Medieval
=Medieval =Post-Medieval/Modern

See also

References

  1. ↑ Cadw: Ancient Monuments and Scheduling. Accessed 25 April 2013
  2. ↑ Cadw will send their list as a spreadsheet, or other electronic formats, on request, as indicated at www.whatdotheyknow.com. This list uses information dated May 2012
  3. 1 2 "Cefn Gelli-gaer Inscribed Stone (305944)". Coflein. RCAHMW. Retrieved 2 October 2021.
  4. 1 2 Cadw. "Gelligaer Common Standing Stone (GM221)". National Historic Assets of Wales.
  5. ↑ Gelligaer Stone (ID PRN00635m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  6. 1 2 Cadw. "Coed Cae Round Cairns (GM271)". National Historic Assets of Wales.
  7. ↑ "Coedcae, Cairnfield (91925)". Coflein. RCAHMW. Retrieved 20 October 2021.
  8. ↑ Coedcae Cairnfield (ID PRN00565m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT). Retrieved 20 October 2021
  9. 1 2 Cadw. "Gelligaer Common Round Cairns (GM220)". National Historic Assets of Wales.
  10. ↑ "Carn Y Bugail, Gelligaer Common (301283)". Coflein. RCAHMW. Retrieved 20 October 2021.
  11. ↑ Carn Bugail (Gelligaer Common Round Cairns SAM Gm 220e) (ID PRN00631m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  12. 1 2 3 "Carn Castellymeibion, Ring Cairn (305675)". Coflein. RCAHMW. Retrieved 4 October 2021.
  13. 1 2 3 Carn Castell Y Meibion B (Penwaun Iago North) (GM586) (ID PRN00490m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  14. 1 2 Cadw. "Carn Castell y Meibion ring cairn (GM586)". National Historic Assets of Wales.
  15. 1 2 3 "Brynbychan Cairn (94651)". Coflein. RCAHMW. Retrieved 5 October 2021.
  16. 1 2 3 TWYN BRYN BYCHAN ROUND CAIRN (ID PRN00559m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  17. 1 2 3 Cadw. "Brynbychan Round Cairn (GM286)". National Historic Assets of Wales.
  18. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM272: Cefn Merthyr Round Cairns
  19. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM563: Morlais Hill ring cairn
  20. 1 2 Cadw. "Tir Lan round barrow cemetery (GM270)". National Historic Assets of Wales.
  21. 1 2 3 coflein NPRN: not yet identified. GGAT PRN not yet identified
  22. 1 2 Cadw. "Garn Las Earthwork (GM236)". National Historic Assets of Wales.
  23. ↑ "Garn Las (305670)". Coflein. RCAHMW. Retrieved 7 December 2021.
  24. ↑ Garn Las (ID PRN00487m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  25. 1 2 Cadw. "Merthyr Common Round Cairns (GM222)". National Historic Assets of Wales.
  26. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM570: Carn Ddu platform cairn
  27. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM567: Cefn Cil-Sanws ring cairn
  28. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM599: Cefn Cil-Sanws, Cairn on SW side of
  29. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM568: Coetgae'r Gwartheg barrow cemetery
  30. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM569: Garn Pontsticill ring cairn
  31. 1 2 Cadw. "Dyke 315m E of Tyla-Glas (GM260)". National Historic Assets of Wales.
  32. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM600: Cefn Cil-Sanws Defended Enclosure
  33. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM518: Enclosure East of Nant Cwm Moel
  34. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM519: Enclosure on Coedcae'r Ychain
  35. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM556: Gelligaer Common Roman Road
  36. ↑ "Nant Crew Inscribed Stone (now In Cefn Coed Church) (275615)". Coflein. RCAHMW. Retrieved 2 October 2021.
  37. 1 2 Cadw. "Nant Crew Inscribed Stone (now in Cefn Coed Church) (BR145)". National Historic Assets of Wales.
  38. ↑ Nant Crew Inscribed Stone (Now in Cefn Coed Church) (ID PRN00052m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  39. ↑ coflein NPRN: 15303. GGAT PRN not yet identified. Cadw SAM: GM314: Platform Houses and Cairn Cemetery on Dinas Noddfa
  40. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM320: Platform Houses on Coly Uchaf
  41. ↑ Newman 1995, pp. 441–42.
  42. ↑ "Morlais Castle, Pant, Merthyr Tydfil (93014)". Coflein. RCAHMW. Retrieved 2 October 2021.
  43. 1 2 Cadw. "Morlais Castle (GM028)". National Historic Assets of Wales.
  44. ↑ Morlais Castle, Pant) (ID PRN00443m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  45. ↑ "Cae Burdydd, Mound (305711)". Coflein. RCAHMW. Retrieved 2 October 2021.
  46. 1 2 Cadw. "Cae Burdydd Castle (BR118)". National Historic Assets of Wales.
  47. ↑ Cae Burdydd (ID PRN00439m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  48. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM571: Cefn Car settlement
  49. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM478: Gurnos Quarry Tramroad & Leat
  50. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM494: Sarn Howell Pond and Watercourses
  51. ↑ coflein NPRN: 309757. GGAT PRN not yet identified. Cadw SAM: GM572: Abercanaid haystack boiler
  52. ↑ "Abercanaid haystack boiler". Google Streetview.
  53. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM467: Cyfarthfa Canal Level
  54. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM495: Cyfarthfa Tramroad Section at Heolgerrig
  55. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM554: Iron Ore Scours and Patch Workings at Winch Fawr, Merthyr Tydfil
  56. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM331: Ynys Fach Iron Furnaces
  57. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM359: Penydarren Tram Road
  58. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM486: Iron Canal Bridge from Rhydycar
  59. ↑ Newman 1995, pp. 443–44.
  60. ↑ Cadw. "Pont-y-Cafnau (11408)". National Historic Assets of Wales. Retrieved 2 October 2021.
  61. 1 2 Cadw. "Pont y Cafnau Tramroad Bridge (GM424)". National Historic Assets of Wales.
  62. 1 2 "Pont-y-cafnau, Merthyr Tydfil (34860)". Coflein. RCAHMW. Retrieved 2 October 2021.
  63. ↑ PONT Y CAFNAU (ID PRN01090m) in the 'SMR' for Glamorgan-Gwent Archaeological Trust (GGAT)
  64. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM594: Merthyr Tramroad: Morlais Castle section
  65. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM573: Merthyr Tramroad Tunnel (Trevithick's Tunnel)
  66. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM460: Cwmdu Air Shaft & Fan
  67. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM425: Remains of Blast Furnaces, Cyfarthfa Ironworks
  68. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM479: Tai Mawr Leat for Cyfarthfa Iron Works
  69. ↑ coflein NPRN: not yet identified. GGAT PRN not yet identified. Cadw SAM: GM496: Deserted Iron Mining Village, Ffos-y-fran

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