Llyn Corn-ystwc, Gwynedd

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

• Category: Water Feature
• Type: Inland Water

• Latitude/Longitude: 52°52'58"N 3°59'54"W
• Eastings/Northings: 265616, 333574
• OS Grid: SH656335
• Mapcode Local: GBR 5W.QF5Q
• Mapcode Global: WH55V.KS4V

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