- Category: Water Feature
- Type: Bay
- Latitude/Longitude: 51°52'29"N 5°18'29"W
- Eastings/Northings: 172385, 224755
- OS Grid: SM723247
- Mapcode Local: GBR C4.S01G
- Mapcode Global: VH0TK.Y45M
Location and coordinates are for the approximate centre of Ogof Mary within this administrative area.
Geographic features and populated places may cross administrative borders.