Tomen Y Mur Roman Fort | Welsh Slate Water Features

Tomen Y Mur

With a grand view overlooking Llyn Trawsfynydd, Tomen Y Mur is a 2,000 year old Roman Fort site in the county of Gwynedd, North Wales. It’s isolated hilltop location in Snowdonia National Park, coupled with the original large scale development and proximity to the coast mean it was once an important military location for the Romans.

Large natural stones with inscriptions, found at nearby Harlech Castle, are thought to document the history of Tomen Y Mur. One such Centurial Stone, pictured below, was set into a reconstructed part of the fort wall in 2007. Tomen Y Mur is also important as it contains one of the last remaining amphitheatres built by the Romans in the UK.

The 360 degree, uninterrupted views from Tomen Y Mur really set it apart from many other ancient ruins. Snowdonia’s many mountains wrap themselves around the hilltop fort location, with the beautiful 4.8 km² lake Llyn Trawsfynydd stretching out in the south west direction.

Find Tomen Y Mur

Tomen Y Mur is situated to the north east of Llyn Trawsfynydd, a short drive off the main A470 road.

Postcode LL41 4DS

It’s possible to park at the Trawsfynydd Power Station cafe car park and enjoy an approximately 4 mile long looped walk to take in Tomen Y Mur, alternatively there is limited parking directly adjacent to the site.

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