Sir Ranulph Fiennes is possibly the most famous living explorer but he believes that the greatest ever polar explorer is Sir Ernest Shackleton. Although Shackleton's expeditions largely ended in failure and disaster his inspirational leadership, bravery and temperament have all been a key source of inspiration for Sir Ranulph during his many adventures. In this episode, Sir Ranulph joins Dan to talk about the incredible journey Shackleton and his men made to save themselves after the loss of their ship the Endurance to the Antarctic ice. Sir Ranulph also uses his similar experiences in the 'polar hell' of the antarctic to give a unique insight into Shackleton's life and work. He also guides Dan through his own life and what it takes to plan and execute a successful mission in the most extreme environment on Earth.