- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 52°55'0"N 4°30'10"W
- Eastings/Northings: 231812, 338429
- OS Grid: SH318384
- Mapcode Local: GBR 56.NBM3
- Mapcode Global: WH448.SYX6
Location and coordinates are for the approximate centre of Gwinllan Tan-y-graig within this administrative area.
Geographic features and populated places may cross administrative borders.