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Cae Gaer is a Roman marching camp situated in Wales on bedrock of Llandovery rocks, composed of mudstone, siltstone and sandstone formed during the Llandovery epoch. The camp represents a temporary military installation of the type erected during Roman campaigns in Britain, when legions required secure overnight encampments during periods of active conquest and consolidation. Such camps typically featured ramparts and ditches laid out in a standardised playing-card pattern, designed to be constructed and abandoned rapidly as the army moved through hostile territory.
The geology beneath Cae Gaer—soft sedimentary strata of the Llandovery formation—would have presented specific challenges and advantages for camp construction. The mudstone and siltstone layers could be worked readily for rampart building, whilst the mixed geology would have affected drainage patterns critical to maintaining the camp's defensive ditches through wet Welsh weather. The site's preservation is safeguarded through Cadw's statutory protection under reference MG057, reflecting its importance as evidence of Roman military operations and infrastructure in Wales.
Marching camps of this type were typically occupied for only brief periods, often just a single night, making them archaeologically valuable witnesses to the routes taken by Roman forces and the pace of their movements through the landscape. The physical remains at Cae Gaer contribute significantly to understanding Roman military strategy and logistics in the Welsh territories.
Cae Gaer is a scheduled monument protected by Cadw under reference MG057. View the official record →
Cae Gaer is a Roman marching camp situated in Wales on bedrock of Llandovery rocks, composed of mudstone, siltstone and sandstone formed during the Llandovery epoch. It is designated a Scheduled Ancient Monument by Cadw under reference MG057.
Cae Gaer dates from the roman period, and is classified as a marching camp. It is one of over 32,000 scheduled monuments protected across the UK.
Cae Gaer 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 MG057.
Several scheduled monuments lie within 10 km, including Ffos Gau Ring Cairn (5.3 km), Nant y Gafod Deserted Rural Settlement (5.7 km), Hafod yr Abad Deserted Rural Settlement (6.3 km).
This page is just one thread. A full Aubrey report pulls together 13 strands of Cae Gaer'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.
Cae Gaer stands on Llandovery Rocks (Undifferentiated), bedrock that formed in the Llandovery. The rock here is mudstone, siltstone and sandstone.