- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°4'39"N 4°17'48"W
- Eastings/Northings: 246245, 355827
- OS Grid: SH462558
- Mapcode Local: GBR 5H.B0QQ
- Mapcode Global: WH43L.ZX33
Location and coordinates are for the approximate centre of Nant Ynysoedd within this administrative area.
Geographic features and populated places may cross administrative borders.