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Grongaer is a prehistoric hillfort situated in Carmarthenshire, Wales, commanding strategic views across the surrounding landscape. The site is defined by substantial earthwork defences comprising multiple banks and ditches that encircle the hilltop, characteristic of Iron Age fortified settlements in Wales. Archaeological evidence and morphological analysis indicate occupation and use during the Iron Age period, when such hillforts served defensive, administrative, and possibly ceremonial functions within their respective territories. The monument remains an important example of prehistoric fortification in south Wales and is protected as a scheduled ancient monument by Cadw.
Grongaer is a scheduled monument protected by Cadw under reference CM082. View the official record →
Grongaer is a prehistoric hillfort situated in Carmarthenshire, Wales, commanding strategic views across the surrounding landscape. It is designated a Scheduled Ancient Monument by Cadw under reference CM082.
Grongaer dates from the prehistoric period, and is classified as a hillfort. It is one of over 32,000 scheduled monuments protected across the UK.
Grongaer 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 CM082.
Several scheduled monuments lie within 10 km, including Castell Dryslwyn (2.3 km), Pen y Garn Camp (2.6 km), Burnt Mound 250m S of Cwm (4.8 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Grongaer'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.
Grongaer stands on Llanvirn Rocks (Undifferentiated), bedrock that formed in the Whiterock. The rock here is mudstone, siltstone and sandstone.