It's one of the region's most famous rivers; the Lune rises in Ravenstonedale and flows over 50 miles to enter the Bay at Sunderland Point.

With much debate about the quality of our water the Lune Rivers Trust, an environmental charity,  works to conserve, protect, rehabilitate and improve the rivers, streams and watercourses of the catchments comprising the River Lune throughout its entire course and all its associated tributaries in Cumbria, Yorkshire and Lancashire.

In this episode hear how Harry Potter is used to inspire the naturalists of the future.