- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 52°34'10"N 3°58'57"W
- Eastings/Northings: 265726, 298693
- OS Grid: SN657986
- Mapcode Local: GBR 8X.C615
- Mapcode Global: WH57D.SPP0
Location and coordinates are for the approximate centre of Mynydd y Llyn within this administrative area.
Geographic features and populated places may cross administrative borders.