Ogof Ddu, Gwynedd

• Parish/Community: Mawddwy
• Unitary Authority: Gwynedd
• Region: Wales

• Category: Geographic Feature
• Type: Hill or Mountain

• Latitude/Longitude: 52°46'47"N 3°38'22"W
• Eastings/Northings: 289500, 321500
• OS Grid: SH895215
• Mapcode Local: GBR 6B.XY3H
• Mapcode Global: WH67R.2D3B

Location and coordinates are for the approximate centre of Ogof Ddu within this administrative area. Geographic features and populated places may cross administrative borders.