- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°33'32"N 3°40'42"W
- Eastings/Northings: 283739, 185787
- OS Grid: SS837857
- Mapcode Local: GBR H8.F1F5
- Mapcode Global: VH5H9.625P
Location and coordinates are for the approximate centre of Cwm Cynffig within this administrative area.
Geographic features and populated places may cross administrative borders.