- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 54°14'57"N 1°10'12"W
- Eastings/Northings: 454180, 484036
- OS Grid: SE541840
- Mapcode Local: GBR NM89.HJ
- Mapcode Global: WHD8L.0G4B
Location and coordinates are for the approximate centre of Flassen Dale within this administrative area.
Geographic features and populated places may cross administrative borders.