- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 52°56'59"N 4°13'35"W
- Eastings/Northings: 250500, 341500
- OS Grid: SH505415
- Mapcode Local: GBR 5K.L5S3
- Mapcode Global: WH55K.13LS
Location and coordinates are for the approximate centre of Bryniau Ystumcegid within this administrative area.
Geographic features and populated places may cross administrative borders.