In the second series of 'Iolo's River Valleys,' naturalist Iolo Williams embarks on a four-part journey across Wales, traveling from sea to source along the valleys of the Usk, Tywi, Teifi, and Dee. This nature documentary blends stunning wildlife cinematography with local history, capturing rare moments such as wild beavers in daylight and ancient bat colonies, while exploring how these vital waterways connect industrial coastlines to remote mountain peaks.
