- Category: Landcover
- Type: Forest or Wood
- Latitude/Longitude: 51°48'28"N 4°25'16"W
- Eastings/Northings: 233165, 214930
- OS Grid: SN331149
- Mapcode Local: GBR D9.X9Y1
- Mapcode Global: VH3LM.9TYC
Location and coordinates are for the approximate centre of Allt Tre-hyrn within this administrative area.
Geographic features and populated places may cross administrative borders.