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Limekilns at Penymynydd, Pedair Heol is a post-medieval and modern industrial monument in Wales, protected by Cadw under reference CM277. The site comprises lime-burning kilns that exploited the abundant limestone resources of the surrounding landscape. The bedrock consists of Dinantian rocks of Mississippian age, comprising limestone with subordinate sandstone and argillaceous deposits, which provided the raw material essential for lime production. These geological conditions made the location ideal for the establishment of lime-working operations.
Limekilns such as those at Penymynydd, Pedair Heol served crucial roles in agricultural and building industries from the post-medieval period onwards. Lime produced by burning limestone in these kilns was spread on farmland to improve soil conditions and used as a binding material in mortar and plaster for construction. The survival of kilns at this site illustrates the dispersed nature of lime production across Wales, where local deposits of suitable stone supported small-scale industrial activity.
The monument represents an important aspect of Wales's industrial heritage, reflecting the landscape's economic value and the adaptation of local resources to meet regional demand. The kilns exemplify the kind of modest, often family-run industrial enterprise that characterised rural manufacturing before large-scale mechanisation fundamentally altered production methods and settlement patterns.
Limekilns at Penymynydd, Pedair Heol is a scheduled monument protected by Cadw under reference CM277. View the official record →
Limekilns at Penymynydd, Pedair Heol is a post-medieval and modern industrial monument in Wales, protected by Cadw under reference CM277.
Limekilns at Penymynydd, Pedair Heol dates from the post medieval/modern period, and is classified as a limekiln. It is one of over 32,000 scheduled monuments protected across the UK.
Limekilns at Penymynydd, Pedair Heol 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 CM277.
Several scheduled monuments lie within 10 km, including Spudder's Bridge (3.6 km), Glanstony Aqueduct, Trimsaran (4.4 km), Dome Gunnery Trainer, Pembrey Airfield (6.6 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Limekilns at Penymynydd, Pedair Heol'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.
Limekilns at Penymynydd, Pedair Heol stands on Dinantian Rocks (Undifferentiated), bedrock that formed in the Mississippian. The rock here is limestone with subordinate sandstone and argillaceous rocks.