Llyn Du-b, Gwynedd

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

• Category: Water Feature
• Type: Other Water Feature

• Latitude/Longitude: 53°0'1"N 3°54'58"W
• Eastings/Northings: 271500, 346500
• OS Grid: SH715465
• Mapcode Local: GBR 5Z.H34F
• Mapcode Global: WH559.TV97

Location and coordinates are for the approximate centre of Llyn Du-b within this administrative area. Geographic features and populated places may cross administrative borders.