- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 51°57'52"N 3°45'20"W
- Eastings/Northings: 279472, 231013
- OS Grid: SN794310
- Mapcode Local: GBR Y6.LF16
- Mapcode Global: VH5F3.VWCD
Location and coordinates are for the approximate centre of Allt Twyn-y-fan-fach within this administrative area.
Geographic features and populated places may cross administrative borders.