Wales: Discovering Snowdonia

S1 E2: The stunning Mawddach estuary is the setting for Julia Bradbury's second railway walk. The area between Dolgellau and the coastal resort of Barmouth is one of the least-visited parts of Snowdonia, but in the 1860s it received a great rush of holiday-makers, all using the new railway that connected this stunning valley to the cities of England.