- Category: Geographic Feature
- Type: Valley
- Latitude/Longitude: 57°38'58"N 3°6'26"W
- Eastings/Northings: 334014, 862731
- OS Grid: NJ340627
- Mapcode Local: GBR L8PH.PBY
- Mapcode Global: WH6JB.7ZMM
Location and coordinates are for the approximate centre of Thunder Slack within this administrative area.
Geographic features and populated places may cross administrative borders.