- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 52°4'32"N 3°55'54"W
- Eastings/Northings: 267704, 243701
- OS Grid: SN677437
- Mapcode Local: GBR DY.CCD0
- Mapcode Global: VH4H5.S3R0
Location and coordinates are for the approximate centre of Allt Erw-hên within this administrative area.
Geographic features and populated places may cross administrative borders.