- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 51°56'49"N 3°53'8"W
- Eastings/Northings: 270486, 229302
- OS Grid: SN704293
- Mapcode Local: GBR Y0.MJSS
- Mapcode Global: VH4HS.LBL6
Location and coordinates are for the approximate centre of Allt Llwyn-Dewi within this administrative area.
Geographic features and populated places may cross administrative borders.