Oedfa wedi ei hail-greu dan ddaear yn Big Pit. A reconstruction of a service from underground at Big Pit.
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Oedfa wedi ei hail-greu dan ddaear yn Big Pit. A reconstruction of a service from underground at Big Pit.
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
