- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°6'26"N 4°42'9"W
- Eastings/Northings: 215009, 248896
- OS Grid: SN150488
- Mapcode Local: GBR CY.966K
- Mapcode Global: VH2MN.F9Q9
Location and coordinates are for the approximate centre of Trwyn Careg-ddu within this administrative area.
Geographic features and populated places may cross administrative borders.