5/5 Stanley is determined to continue Livingstone's quest to find the source of the Nile.
BBC Radio 4
4/5 David Livingstone aims to solve the mystery of the Nile's source once and for all.
3/5 Samuel Baker and his mistress Florence go in search of Lake Albert.
2/5 Burton is too weak to travel so Speke heads for the Rusizi River alone.
1/5 Richard Burton and John Speke leave for Africa in search of the source of the Nile.
Arthur Smith joins the Iranian comedian Shappi Khorsandi as she returns to Paris.
BBC Radio 4 Extra
Geoff Dyer's travel essays begin with a pilgrimage to the house of an intellectual hero.
Arthur Smith joins Radio 1 DJ Annie Nightingale.
Arthur Smith retraces the footsteps of former Olympian and commentator Brendan Foster.
6/6 Clare Balding meets Phoebe Smith, an expert in planning long walks and bagging bothies.