- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 51°48'16"N 4°32'46"W
- Eastings/Northings: 224544, 214830
- OS Grid: SN245148
- Mapcode Local: GBR D4.XGZ8
- Mapcode Global: VH2P3.4XY1
Location and coordinates are for the approximate centre of Allt y Ciliau within this administrative area.
Geographic features and populated places may cross administrative borders.