- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°0'51"N 4°33'25"W
- Eastings/Northings: 224622, 238186
- OS Grid: SN246381
- Mapcode Local: GBR D4.H6B7
- Mapcode Global: VH2N3.YMRP
Location and coordinates are for the approximate centre of Cwm-Ffynnonau within this administrative area.
Geographic features and populated places may cross administrative borders.