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Latitude: 51.6204 / 51°37'13"N
Longitude: -3.2033 / 3°12'11"W
OS Eastings: 316792
OS Northings: 191971
OS Grid: ST167919
Mapcode National: GBR HX.90ZB
Mapcode Global: VH6DM.FJDN
Entry Name: Pen-y-Rhiw Round Cairn
Scheduled Date: 2 April 1956
Source: Cadw
Source ID: 2388
Cadw Legacy ID: MM149
Schedule Class: Religious, Ritual and Funerary
Category: Round cairn
Period: Prehistoric
County: Caerphilly (Caerffili)
Community: Ynysddu (Ynys-ddu)
Traditional County: Monmouthshire