- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°52'0"N 3°52'28"W
- Eastings/Northings: 271022, 220359
- OS Grid: SN710203
- Mapcode Local: GBR Y1.SFKG
- Mapcode Global: VH4J5.SBHP
Location and coordinates are for the approximate centre of Cwm-Hirblyg within this administrative area.
Geographic features and populated places may cross administrative borders.