:Cefn Carnedd
{{Use dmy dates|date=April 2022}}
{{Infobox ancient site
|name = Cefn Carnedd
|native_name =
|alternate_name =
|image =
|image_size =
|alt =
|caption =
|map_type = Wales Powys
|map_alt =
|map_size = 180px
|location = Near Caersws, Wales
|region =
|coordinates = {{coord|52|29|56|N|3|26|57|W|display=inline,title|type:landmark_region:GB}}
|gbgridref = SO 016 900
|type = Hillfort
|part_of =
|length = {{convert|437|m|ft}}
|width = {{convert|84|m|ft}}
|area = {{convert|6|ha}}
|height =
|epochs = Iron Age
}}
Cefn Carnedd is an Iron Age hillfort, about {{convert|1.5|mi|0}} south-west of Caersws, in Powys, Wales. It is a scheduled monument.{{Coflein|num=94016|desc=Cefn Carnedd hillfort, near Caersws|access-date=15 October 2021}}
It is on a hill overlooking the River Severn to the east, and Afon Cerist and Afon Trannon to the north; there is a river confluence to the north-east, between the fort and Caersws.
Description
The fort is about {{convert|437|m|ft}} by {{convert|84|m|ft}} orientated north-east to south-west, aligned with the shape of the hill; it encloses an area of about {{convert|6|ha}}. There are triple banks and ditches on the north-west side, and there are entrances in the north-east and south-west.Christopher Houlder. Wales: An Archaeological Guide. Faber and Faber, 1978. Page 96.
In an early phase, there was a smaller fort of {{convert|1.6|ha}} at the south-west end, traces of the north-east rampart of this being visible in aerial photographs. There is a straight bank and ditch across the interior, which was built at a late stage.
History
It is thought that the fort may have been a stronghold of the Ordovices, and it is one of the locations suggested as the site of Caratacus' last battle in AD 51, when he was defeated by the Romans.{{Coflein|num=403831|desc=Cefn Carnedd: Possible battle site, near Caersws|access-date=15 October 2021}}