- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 54°15'29"N 2°19'16"W
- Eastings/Northings: 379179, 484771
- OS Grid: SD791847
- Mapcode Local: GBR DM76.89
- Mapcode Global: WH94M.97YF
Location and coordinates are for the approximate centre of Long Slack within this administrative area.
Geographic features and populated places may cross administrative borders.