- Category: Water Feature
- Type: Wetland
- Latitude/Longitude: 53°18'28"N 3°50'43"W
- Eastings/Northings: 277136, 380596
- OS Grid: SH771805
- Mapcode Local: GBR 1ZL5.8W
- Mapcode Global: WH53Z.X30V
Location and coordinates are for the approximate centre of Cerrig Duon within this administrative area.
Geographic features and populated places may cross administrative borders.