- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 52°13'53"N 4°14'50"W
- Eastings/Northings: 246610, 261631
- OS Grid: SN466616
- Mapcode Local: GBR DJ.1K33
- Mapcode Global: VH3JS.B5DN
Location and coordinates are for the approximate centre of Allt Byrn-gwyn within this administrative area.
Geographic features and populated places may cross administrative borders.