Clare walks with Mike Gunton, the man in charge of Planet Earth III, another blockbuster series from the BBC’s Natural History Unit. Mike’s a passionate walker and he takes Clare on a favourite local route around Oldbury on Severn where he courted his wife, and once filmed a sequence in a graveyard about the grim sounding ‘burying beetle’. He also shares stories of his many years working with Sir David Attenborough, and what it’s like making some of the most beautiful and memorable TV shows of recent years. Oldbury on Severn is, as it sounds, near the banks of the longest river in the UK which runs 220 miles from its source in the Cambrian Mountains in mid-Wales to where it meets the sea at the Bristol channel. They meet at St. Arilda's Church and head off on a circular walk of around five miles ending back in the village, at the local pub.

Map: OS Explorer 167 Thornbury, Dursley and Yate

Presenter: Clare Balding