- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 51°42'6"N 3°36'53"W
- Eastings/Northings: 288497, 201576
- OS Grid: SN884015
- Mapcode Local: GBR HB.3ZCK
- Mapcode Global: VH5GK.9H98
Location and coordinates are for the approximate centre of Coetgae'r Derlwyn within this administrative area.
Geographic features and populated places may cross administrative borders.