Duddon Valley

The Duddon Valley is a valley in the Lake District National Park in Cumbria, England. The River Duddon flows through the valley, rising in the mountains between Eskdale and Langdale, before flowing into the Irish Sea near Broughton in Furness. In its lower reaches it is bounded by the Furness Fells and Harter Fell.

The part of the valley near the village of Ulpha is marked as "Dunnerdale" on Ordnance Survey maps, and upstream towards the village of Seathwaite is Hall Dunnerdale. The name "Dunnerdale" is often used as a synonym for "Duddon Valley", but people, including Alfred Wainwright, prefer the name "Duddon Valley". He wrote in The Southern Fells, "I ought to mention that I am aware that the Duddon Valley is also properly known as Dunnerdale, a name I haven't used in the book, preferring the former; just as I never refer…