Blackwood Enclosure, Trewern
Has been described as a Possible Timber Castle (Ringwork)
There are earthwork remains
| Name | Blackwood Enclosure, Trewern |
| Alternative Names | Craig Pwll-du; Terwern in Elfael |
| Historic Country | Radnorshire |
| Modern Authority | Powys |
| 1974 Authority | Powys |
| Community | Glasbury |
A natural, flat-topped bluff, set above a bend in the Howey river gorge, is cut off to the S by a rock-cut ditch. The resulting enclosure is 36m by 15m, tapering to 5.0m in the S. (Coflein as unknown defended enclosure)
Poss defended site comprising a single rock cut ditch 4m deep by 14m wide which isolates a 30m by 10m area of a promontory. No further detail. (Clwyd Powys Archaeological Trust HER as medieval castle)
Not scheduled
Not Listed
The National Monument Record (Coflein) number(s)
County Historic Environment Record
| OS Map Grid Reference | SO121435 |
| Latitude | 52.0829200744629 |
| Longitude | -3.28420996665955 |
| Eastings | 312100 |
| Northings | 243500 |