- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°11'51"N 3°13'52"W
- Eastings/Northings: 315951, 256197
- OS Grid: SO159561
- Mapcode Local: GBR YW.3R50
- Mapcode Global: VH69W.Y154
Location and coordinates are for the approximate centre of Cwm Crawnllwyn within this administrative area.
Geographic features and populated places may cross administrative borders.