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Cyfarthfa Tramroad Section at Heolgerrig is a post-medieval tramroad preserved within an industrial landscape shaped by South Wales coal and ironstone extraction. The route follows the underlying geology of the Pennine Lower Coal Measures, where mudstone, siltstone and sandstone strata host the coal seams and ironstone bands that drove nineteenth-century industry in this region. The tramroad carried ore and coal from local quarries and pits down to the ironworks at Cyfarthfa, linking the high moorland workings around Heolgerrig to the valley floor operations below.
The section survives as a physical trace of the transport infrastructure that connected scattered upland mineral sources to the concentrated industrial production of the Merthyr Tydfil area. Such tramroads were crucial to the competitiveness of Welsh ironmaking, allowing economic movement of heavy raw materials before railway development. The exposed geology visible along the tramroad's course reveals the ferricrete and coal measures that miners and quarrymen exploited.
The monument is protected by Cadw as a nationally significant example of early industrial transport archaeology, registration number GM495. It remains an important record of the engineering and logistical systems that sustained the region's pre-railway industrial economy.
Cyfarthfa Tramroad Section at Heolgerrig is a scheduled monument protected by Cadw under reference GM495. View the official record →
Cyfarthfa Tramroad Section at Heolgerrig is a post-medieval tramroad preserved within an industrial landscape shaped by South Wales coal and ironstone extraction. It is designated a Scheduled Ancient Monument by Cadw under reference GM495.
Cyfarthfa Tramroad Section at Heolgerrig 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.
Cyfarthfa Tramroad Section at Heolgerrig 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 GM495.
Several scheduled monuments lie within 10 km, including Darren Fawr Round Cairns (3.8 km), Rhos-Gwawr cairn cemetery (6.8 km), Platform Houses on Coly Uchaf (7.2 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Cyfarthfa Tramroad Section at Heolgerrig'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.
Cyfarthfa Tramroad Section at Heolgerrig stands on Pennine Lower Coal Measures Formation And South Wales Lower Coal Measures Formation (Undifferentiated), bedrock that formed in the Westphalian. The rock here is mudstone, siltstone, sandstone, coal, ironstone and ferricrete.