- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 51°38'45"N 3°45'9"W
- Eastings/Northings: 278840, 195579
- OS Grid: SS788955
- Mapcode Local: GBR H5.7DTZ
- Mapcode Global: VH5GN.XW1M
Location and coordinates are for the approximate centre of Cwm Pelenna within this administrative area.
Geographic features and populated places may cross administrative borders.