- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°4'58"N 4°6'5"W
- Eastings/Northings: 259335, 356030
- OS Grid: SH593560
- Mapcode Local: GBR 5R.9S59
- Mapcode Global: WH54T.ZR1Y
Location and coordinates are for the approximate centre of Cwm Brwynog within this administrative area.
Geographic features and populated places may cross administrative borders.