- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 51°42'4"N 3°36'53"W
- Eastings/Northings: 288500, 201500
- OS Grid: SN885015
- Mapcode Local: GBR HB.45GF
- Mapcode Global: VH5GK.9HBR
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.