Siambr Gladdu Dyffryn Ardudwy Dyffryn Ardudwy, Gwynedd, LL48 6LF Retail Phone Number Phone Number icon for Snowdonia retail page 01443 336000 Retail Screen Screen icon for Snowdonia retail page https://cadw.gov.wales/daysout/dyffrynardudwyburialchamber/?skip=1&lang=cy Snowdonia Facebook Page Facebook icon for Snowdonia Facebook page Facebook Snowdonia Twitter Page Twitter icon for Snowdonia Twitter page Twitter Snowdonia Youtube Page Youtube icon for Snowdonia Youtube page Twitter Beddrod Neolithig yn cynnwys dwy siambr o wahanol gyfnodau, yn wreiddiol wedi ei orchuddio â charnedd o gerrig.
