- Category: Water Feature
- Type: Island
- Latitude/Longitude: 49°57'8"N 5°12'24"W
- Eastings/Northings: 170067, 10722
- OS Grid: SW700107
- Mapcode Local: GBR FXJT.1SZ
- Mapcode Global: VH13X.PGSF
Location and coordinates are for the approximate centre of Mên Hyr within this administrative area.
Geographic features and populated places may cross administrative borders.