- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°20'11"N 4°27'10"W
- Eastings/Northings: 225534, 51387
- OS Grid: SX255513
- Mapcode Local: GBR NG.X211
- Mapcode Global: FRA 18K4.P11
Location and coordinates are for the approximate centre of Dunker Rock within this administrative area.
Geographic features and populated places may cross administrative borders.