- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°33'30"N 3°28'51"W
- Eastings/Northings: 297432, 185442
- OS Grid: SS974854
- Mapcode Local: GBR HJ.F34L
- Mapcode Global: VH5HD.M332
Location and coordinates are for the approximate centre of Cwm Rhydymilwyr within this administrative area.
Geographic features and populated places may cross administrative borders.