- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 52°35'22"N 3°41'32"W
- Eastings/Northings: 285445, 300431
- OS Grid: SH854004
- Mapcode Local: GBR 98.9ZH4
- Mapcode Global: WH68P.75YL
Location and coordinates are for the approximate centre of Mynydd Ty'r-Sais within this administrative area.
Geographic features and populated places may cross administrative borders.