Castell Du, Llanwnnen
Has been described as a Possible Timber Castle (Ringwork)
There are cropmark/slight earthwork remains
| Name | Castell Du, Llanwnnen |
| Alternative Names | Llanwnen, Castell Ddu |
| Historic Country | Cardiganshire |
| Modern Authority | Ceredigion |
| 1974 Authority | Dyfed |
| Community | Llanwnnen |
A D-shaped enclosure, about 24m north-south by 18m, resting on steep natural scarps above the valley of the Grannell on the east, defined elsewhere by massive banks, up to 4.2m high, having a centrally placed west-facing entrance set at the point of the D; a possible building platform occupies the northern part of the enclosure; there are no indications of ditches, or further works, although OS County series (Cardigan. XLI.3 1889) shows a fragment of bank some 60m to the north, by the modern road: the place-name 'Castell Ddu' occurs some 350m to the south-west. (Coflein)
The monument comprises the remains of a well preserved castle-ringwork, which dates to the early part of the medieval period (c. AD 1066 - 1485). The monument consists of a semi circular earthwork built on the edge of a steep drop to the river. It is c.18m in diameter, the defences being on the west side and reaching c.2.5m above the interior and c.4.5m above the exterior. There are slight indications of a ditch on the north side in the neighbouring field. (Scheduling Report)
This site is a scheduled monument protected by law
Not Listed
The National Monument Record (Coflein) number(s)
County Historic Environment Record
| OS Map Grid Reference | SN533471 |
| Latitude | 52.1030311584473 |
| Longitude | -4.14201021194458 |
| Eastings | 253370 |
| Northings | 247130 |
