- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 52°3'33"N 3°54'55"W
- Eastings/Northings: 268787, 241819
- OS Grid: SN687418
- Mapcode Local: GBR DZ.DHGG
- Mapcode Global: VH4H6.2HZS
Location and coordinates are for the approximate centre of Allt Cwmgerwyn within this administrative area.
Geographic features and populated places may cross administrative borders.