- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 51°49'23"N 4°10'32"W
- Eastings/Northings: 250142, 216080
- OS Grid: SN501160
- Mapcode Local: GBR DM.WBW2
- Mapcode Global: VH3LR.KFRP
Location and coordinates are for the approximate centre of Allt Pen-llwyn-iô within this administrative area.
Geographic features and populated places may cross administrative borders.