Cadi Iolen sy'n rhoi hanes Chwarel Dinorwig, a hithau'n 200 mlynedd ers ei hagor. 200 years on from the establishment of Dinorwig Quarry, Cadi Iolen speaks about its development. Show more
Discover 11,128,835 listings and 280,433 playable programmes from the BBC
Cadi Iolen sy'n rhoi hanes Chwarel Dinorwig, a hithau'n 200 mlynedd ers ei hagor. 200 years on from the establishment of Dinorwig Quarry, Cadi Iolen speaks about its development. Show more
Mae Radio Cymru wedi bod yn darlledu rhaglenni ers 1977. Radio Cymru has been broadcasting to the nation since 1977.
