- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 52°45'54"N 3°58'14"W
- Eastings/Northings: 267132, 320439
- OS Grid: SH671204
- Mapcode Local: GBR 5X.YV86
- Mapcode Global: WH56F.ZRCH
Location and coordinates are for the approximate centre of Cwm-Llechen within this administrative area.
Geographic features and populated places may cross administrative borders.