- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 54°25'13"N 3°5'42"W
- Eastings/Northings: 329044, 503315
- OS Grid: NY290033
- Mapcode Local: GBR 6KTB.Q6
- Mapcode Global: WH716.F5D5
Location and coordinates are for the approximate centre of Hollin Slack within this administrative area.
Geographic features and populated places may cross administrative borders.