Cwm Du, Caerphilly

• Parish/Community: Rudry
• Unitary Authority: Caerphilly
• Region: Wales

• Category: Geographic Feature
• Type: Valley

• Latitude/Longitude: 51°33'54"N 3°7'30"W
• Eastings/Northings: 322113, 185731
• OS Grid: ST221857
• Mapcode Local: GBR J0.DNMY
• Mapcode Global: VH6DV.SX8K

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