- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 52°50'56"N 3°30'12"W
- Eastings/Northings: 298852, 328999
- OS Grid: SH988289
- Mapcode Local: GBR 6J.SFH8
- Mapcode Global: WH67F.4NZ7
Location and coordinates are for the approximate centre of Y Groes Fagl within this administrative area.
Geographic features and populated places may cross administrative borders.