- Category: Geographic Feature
- Type: Hill or Mountain
- Latitude/Longitude: 52°39'29"N 4°1'40"W
- Eastings/Northings: 262928, 308659
- OS Grid: SH629086
- Mapcode Local: GBR 8V.5LVG
- Mapcode Global: WH570.3F5X
Location and coordinates are for the approximate centre of Twllydarren within this administrative area.
Geographic features and populated places may cross administrative borders.