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Defended Enclosure 500m NNE of Blaen-maenog is a prehistoric promontory fort located in Wales. The monument occupies a naturally defensible position where the terrain drops away sharply, exploiting the local geology of Ashgill rocks—mudstones, siltstones and sandstones that form steep slopes ideal for fortification. Such promontory forts represent a distinctive form of prehistoric defensive settlement, typically constructed during the Iron Age, where a neck of land is cut off by artificial banks and ditches to create an enclosed stronghold. This example demonstrates how prehistoric communities selected locations where natural geology could be combined with earthwork defences to maximise protection of valuable land and resources.
The monument is protected by Cadw under reference CM377, recognising its archaeological importance and preservation needs. Promontory forts of this type often served multiple purposes—as livestock enclosures, centres of authority, or refuges in times of conflict. The specific geological setting here, with its stable bedrock foundation and dramatic natural contours, would have made this location particularly attractive to prehistoric settlers seeking both security and visibility across the surrounding landscape.
Defended Enclosure 500m NNE of Blaen-maenog is a scheduled monument protected by Cadw under reference CM377. View the official record →
Defended Enclosure 500m NNE of Blaen-maenog is a prehistoric promontory fort located in Wales. It is designated a Scheduled Ancient Monument by Cadw under reference CM377.
Defended Enclosure 500m NNE of Blaen-maenog dates from the prehistoric period, and is classified as a promontory fort - inland. It is one of over 32,000 scheduled monuments protected across the UK.
Defended Enclosure 500m NNE of Blaen-maenog 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 CM377.
Several scheduled monuments lie within 10 km, including Cerrig Llwydion Burial Chamber (3.3 km), Crug Gwyn Round Barrow (5.2 km), Crug Fach Round Barrow (5.3 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Defended Enclosure 500m NNE of Blaen-maenog'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.
Defended Enclosure 500m NNE of Blaen-maenog stands on Ashgill Rocks (Undifferentiated), bedrock that formed in the Ashgill. The rock here is mudstone, siltstone and sandstone.