- Category: Water Feature
- Type: Island
- Latitude/Longitude: 52°1'48"N 5°3'27"W
- Eastings/Northings: 190342, 241259
- OS Grid: SM903412
- Mapcode Local: GBR CG.G83Q
- Mapcode Global: VH1QD.971N
Location and coordinates are for the approximate centre of Carreg Gybi within this administrative area.
Geographic features and populated places may cross administrative borders.