- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 52°2'47"N 4°27'13"W
- Eastings/Northings: 231829, 241520
- OS Grid: SN318415
- Mapcode Local: GBR D8.F7XQ
- Mapcode Global: VH3KF.RTBJ
Location and coordinates are for the approximate centre of Allt Cwm-erllys within this administrative area.
Geographic features and populated places may cross administrative borders.