18:00LleChiPorthmadog a Blaenau FfestiniogBBC Radio Cymru Duration: 27 o funudau Wed 7th Jul 2021, 18:00 on BBC Radio CymruAvailable for yearsGwrando nawrIfor ap Glyn ar daith o gwmpas ardaloedd chwarelyddol Gwynedd, i ddathlu'r dreftadaeth ddiwydiannol a diwylliannol. Ifor ap Glyn visits some of the quarring areas of Gwynedd.GenresFactualScience & NatureNature & EnvironmentBrandLleChi Source: BBC Online