- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 52°32'32"N 3°52'53"W
- Eastings/Northings: 272500, 295500
- OS Grid: SN725955
- Mapcode Local: GBR 91.DT4Q
- Mapcode Global: VH4DW.NCWC
Location and coordinates are for the approximate centre of Mynydd Du within this administrative area.
Geographic features and populated places may cross administrative borders.