- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°16'46"N 4°6'16"W
- Eastings/Northings: 256522, 266706
- OS Grid: SN565667
- Mapcode Local: GBR 8R.YD0N
- Mapcode Global: VH4FX.SYXR
Location and coordinates are for the approximate centre of Cwm-Trawsnant within this administrative area.
Geographic features and populated places may cross administrative borders.