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Taith cofnodi cacynnod
August 30 @ 1:00 pm - 3:00 pm
Dewch i Gwm Idwal i helpu gofnodi cacynod ac i gyfranu at warchod un o gacynod mwyaf prin Cymru.
Archebwch lle drwy ebostio rhys.wheldonroberts@nationaltrust.org.uk neu galw 01248 605535 / 07977 596517.