Hill forts · North Wales
Tomen y Mur
In or near Q737888.
Tomen y Mur — Roman fort and motte-and-bailey castle in Gwynedd, Wales.

Wikimedia Commons contributors — see linked file page for photographer and licence licence
Plan your visit
- Typical visit
- 1 h–2 h
- Nearest railway station
- Dduallt · 4.4 km
- Free entry
- Dog-friendly
Getting there & planning your visit
To visit Tomen y Mur, the nearest railway station is Dduallt, located 4.4 km away. The postcode for the site is LL41 4RE, which you can use for sat-nav coordinates (latitude 52.9299, longitude -3.9268). Entry to the hill-fort is free.
About
Tomen y Mur is a hill fort in the United Kingdom. Heritage designation: scheduled monument. Wikidata describes it as: "Roman fort and motte-and-bailey castle in Gwynedd, Wales". Coordinates: 52.9299°, -3.9268°.
Photo gallery
Official information
Tomen y Mur is a significant archaeological site representing one of the best-preserved Roman military settlements in Wales. It features various earthworks and remains from different historical periods, including a fort enclosure, buildings, and burial mounds. The site is located on a mountain shoulder overlooking the Trawsfynydd basin and has been of historical importance from the Roman era through to the medieval period.
From the Wikipedia article
Tomen y Mur is a Roman fort in Snowdonia, Gwynedd, Wales, dating to the first century AD. The fortification, which lies on the slope of an isolated spur northeast of Llyn Trawsfynydd, was constructed during the North Wales campaigns of governor Gnaeus Julius Agricola in AD 78. The fort stood adjacent to the Roman road known as Sarn Helen. It was occupied until it was abandoned around AD 140. In the 11th century, the Normans reused part of the site for a motte. Tomen y Mur, which is managed by Snowdonia National Park Authority, is a scheduled monument.
Excerpt from Wikipedia under CC BY-SA 4.0. See the source article linked in Sources below.
Background
History
According to Tacitus, the native Celtic tribe of Ordovices aggressively resisted Roman occupation of their territory in central and Northwest Wales. Alongside the Silures, they fought a bitter guerrilla war under the leadership of Caratacus during the AD 50s. Shortly before Agricola's governorship began in AD 78, the Ordovices were still actively resisting and had massacred an entire regiment of Roman Cavalry based in their territory. Agricola's response – part of his overall conquest of Wales – was so brutal that Tacitus tells us that the Ordovices were effectively wiped out. view of Tomen y Mur Roman Fort and Norman Motte.]] Tomen y Mur was probably built to maintain Roman authority over…
Sourced from Wikipedia under CC BY-SA 4.0.
- Coordinates
- 52.9299, -3.9268
- District
- Gwynedd
- Parish
- Maentwrog
- Postcode
- LL41 4RE
- Parliamentary constituency
- Dwyfor Meirionnydd
- Nearest railway station
- Dduallt — 4.4 km
Sources
- wikidata: Q12071213 (CC0)
- wikipedia: Tomen y Mur (CC BY-SA 4.0)
- commons: Tomenmur2.jpg (CC BY-SA 4.0)
Other places nearby

Castell Tomen-y-Mor
Archaeological sites · 0.0 km

Castell Tomen y Mur
Literary houses · 0.0 km

Tomen Y Mur Roman Fort
Archaeological sites · 0.1 km

Tomen-y-mor
Historic houses · 0.1 km

Roman Mansion
Archaeological sites · 0.1 km

Tomen-y-Mur West Practice Camp II
Archaeological sites · 0.2 km

Roman Parade Ground
Archaeological sites · 0.2 km

Tomen y Mur amphitheatre
Open-air theatres · 0.3 km

Braich-Ddu quarry
Quarries · 1.4 km

Pont Tafarn-helyg
Historic bridges · 2.1 km

Foel Fawr
Mountains & hills · 2.1 km

Coed-y-Llwyn Caravan and Motorhome Club Site
Caravan parks · 2.2 km
Nearby
Archaeological sites · North Wales
Castell Tomen-y-Mor
Castell Tomen-y-Mor — a archaeological in wales-north, United Kingdom.
Literary houses · North Wales
Castell Tomen y Mur
Castell Tomen y Mur — a literary house museum in wales north.
Archaeological sites · North Wales
Tomen Y Mur Roman Fort
Tomen Y Mur Roman Fort — a archaeological in wales-north, United Kingdom.
Historic houses · North Wales
Tomen-y-mor
Tomen-y-mor — a historic house in wales-north, United Kingdom.
Archaeological sites · North Wales
Roman Mansion
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Archaeological sites · North Wales
Tomen-y-Mur West Practice Camp II
Tomen-y-Mur West Practice Camp II — a archaeological in wales-north, United Kingdom.
Where to eat & stay near Tomen y Mur
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Frequently asked questions
- Where is Tomen y Mur?
- Tomen y Mur is in North Wales, United Kingdom (postcode LL41 4RE), in the parish of Maentwrog.
- What is Tomen y Mur?
- Tomen y Mur — Roman fort and motte-and-bailey castle in Gwynedd, Wales.
- How do I get to Tomen y Mur?
- The nearest railway station is Dduallt, about 4.4 km away. Drivers can use postcode LL41 4RE.
- Is Tomen y Mur a listed building?
- Tomen y Mur is officially recognised as scheduled monument listed.
- Is Tomen y Mur free to visit?
- Yes, Tomen y Mur is free to enter.
- How do I get to Tomen y Mur?
- The nearest railway station is Dduallt, about 4.4 km away. Drivers can navigate to postcode LL41 4RE.