Dduallt () (pronounced ) is a mountain in central Snowdonia, north Wales. It is the sister peak of Rhobell Fawr. It lies north of the A494 between Dolgellau and Llanuwchllyn. Its eastern slopes are the source of the Afon Dyfrdwy (River Dee). References External links Dduallt is at coordinates www.geograph.co.uk : photos of Dduallt and surrounding area Hewitts of Wales Nuttalls Mountains and hills of Snowdonia Llanuwchllyn Mountains and hills of Gwynedd