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Merthyr Tramroad: Morlais Castle section is a post-medieval and modern industrial tramroad located in Wales. The route follows terrain underlain by Dinantian rocks, a limestone-dominated geology with bands of sandstone and mudstone typical of Mississippian-age formations. This geological setting provided both practical challenges for construction and valuable resources that would later drive industrial development in the region.
The tramroad represents the transport infrastructure that emerged to service the iron and coal industries of the South Wales valleys. Built across undulating Dinantian bedrock, the route required substantial engineering works to maintain viable gradients for horse-drawn traffic and, later, steam locomotives. The limestone geology shaped both the landscape through which the tramroad passed and the industrial activities it served.
The Morlais Castle section is protected by Cadw as a scheduled monument under reference GM594, recognising its significance as physical evidence of Wales's industrial heritage. The survival of this tramroad demonstrates the scale and permanence of investment in transport infrastructure during the industrial era, with its alignment and construction still legible in the modern landscape above the underlying Dinantian bedrock.
Merthyr Tramroad: Morlais Castle section is a scheduled monument protected by Cadw under reference GM594. View the official record →
Merthyr Tramroad: Morlais Castle section is a post-medieval and modern industrial tramroad located in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference GM594.
Merthyr Tramroad: Morlais Castle section dates from the post medieval/modern period, and is classified as a tramroad. It is one of over 32,000 scheduled monuments protected across the UK.
Merthyr Tramroad: Morlais Castle section is a Scheduled Ancient Monument, legally protected by Cadw — the body responsible for designating and safeguarding heritage sites in Wales. The official designation reference is GM594.
Several scheduled monuments lie within 10 km, including Graig-y-Gilfach round cairn and earthwork (6.5 km), Carn Castell y Meibion ring cairn (6.7 km), Merthyr Common Round Cairns (7.1 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Merthyr Tramroad: Morlais Castle section's history, each drawn from the record and mapped to the exact spot:
Every location is different. Not every section appears for every place, only what the historical record actually holds turns up in a report.
Merthyr Tramroad: Morlais Castle section stands on Dinantian Rocks (Undifferentiated), bedrock that formed in the Mississippian. The rock here is limestone with subordinate sandstone and argillaceous rocks.