Landscapes & nature
Rhinog Fawr
Mountain (720m) in Gwynedd
Wikipedia names Rhinog Fawr as where 1 film or series was filmed; its page links to the sentence that says so. Wikidata records no shoot here yet.

Filmed here, per Wikipedia
Wikipedia says these were filmed in Rhinog Fawr. Each title’s page links to the sentence that says so.
Filming locations nearby
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Towns & cities
Llanbedr
Wales · 7 km west
Village and community in Gwynedd, Wales
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Towns & cities
Harlech
Wales · 8 km west
Town, community and seaside resort in Gwynedd, within the historical boundaries of Meirionnydd in northwest Wales
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Landmarks & buildings
Clogau Gold Mine
United Kingdom · 9 km south
Gold mine in north-west Wales
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Landscapes & nature
Ynys Gifftan
United Kingdom · 10 km north-west
Tidal island near the south east shore of Traeth Bach, the Dwyryd estuary near Portmeirion in Gwynedd, north Wales
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Landmarks & buildings
Portmeirion Hotel
Wales · 10 km north-west
Grade II listed building in Gwynedd. Located on the sea front at the southern edge of the village.
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Towns & cities
Portmeirion
Wales · 10 km north-west
Village in Wales