- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 51°33'56"N 3°43'3"W
- Eastings/Northings: 281039, 186586
- OS Grid: SS810865
- Mapcode Local: GBR H6.DPKL
- Mapcode Global: VH5H2.HXY6
Location and coordinates are for the approximate centre of Mynydd y Castell within this administrative area.
Geographic features and populated places may cross administrative borders.