- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 53°9'58"N 3°58'38"W
- Eastings/Northings: 267906, 365060
- OS Grid: SH679650
- Mapcode Local: GBR 5X.4D9M
- Mapcode Global: WH54H.WP52
Location and coordinates are for the approximate centre of Cwm Caseg within this administrative area.
Geographic features and populated places may cross administrative borders.