- Category: Water Feature
- Type: Island
- Latitude/Longitude: 53°23'58"N 4°34'32"W
- Eastings/Northings: 228862, 392273
- OS Grid: SH288922
- Mapcode Local: GBR HM2Q.8VV
- Mapcode Global: WH41X.PTC7
Location and coordinates are for the approximate centre of Trwyn Cerrigyreryr within this administrative area.
Geographic features and populated places may cross administrative borders.