- Category: Water Feature
- Type: Island
- Latitude/Longitude: 55°53'50"N 2°7'38"W
- Eastings/Northings: 392127, 667139
- OS Grid: NT921671
- Mapcode Local: GBR F0L7.6T
- Mapcode Global: WH9XX.914D
Location and coordinates are for the approximate centre of Castle Rock within this administrative area.
Geographic features and populated places may cross administrative borders.