- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 51°35'2"N 3°44'28"W
- Eastings/Northings: 279448, 188672
- OS Grid: SS794886
- Mapcode Local: GBR H5.CHMY
- Mapcode Global: VH5H2.3GG1
Location and coordinates are for the approximate centre of Ergyd Isaf within this administrative area.
Geographic features and populated places may cross administrative borders.