Allt Ddu, Powys

• Parish/Community: Llanbrynmair
• Unitary Authority: Powys
• Region: Wales

• Category: Geographic Feature
• Type: Hill or Mountain

• Latitude/Longitude: 52°32'45"N 3°37'51"W
• Eastings/Northings: 289500, 295500
• OS Grid: SN895955
• Mapcode Local: GBR 9C.DNPF
• Mapcode Global: VH5BH.08TH

Location and coordinates are for the approximate centre of Allt Ddu within this administrative area. Geographic features and populated places may cross administrative borders.