- Category: Water Feature
- Type: Island
- Latitude/Longitude: 50°1'51"N 5°4'54"W
- Eastings/Northings: 179388, 19087
- OS Grid: SW793190
- Mapcode Local: GBR ZF.209S
- Mapcode Global: FRA 087X.Q1Z
Location and coordinates are for the approximate centre of Pedn-myin within this administrative area.
Geographic features and populated places may cross administrative borders.