English: Castell Trefadog - a Viking Fort? This is a very heavily defended site on the point south of Trefadog beach. It could be an Iron Age fortification, although others have suggest it may have been constructed by Viking settlers. There is also evidence of a medieval house on the site. The following link shows an aerial view of the site. There is no public access to the fort.
http://www.castlewales.com/trefadog.html
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