- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°13'24"N 4°31'50"W
- Eastings/Northings: 231154, 372590
- OS Grid: SH311725
- Mapcode Local: GBR 55.0XKM
- Mapcode Global: WH42X.C7SM
Location and coordinates are for the approximate centre of Cerrig-y-brain within this administrative area.
Geographic features and populated places may cross administrative borders.