Undated file photo of Sir Ernest Shackleton. One hundred years after Shackleton's death, the ship 'Endurance' was found at a depth of 3008 metres in the Weddell Sea, within the search area defined by the expedition team before its departure from Cape Town, and approximately four miles south of the position originally recorded by Captain Worsley. PA Wire/PA Images
Undated file photo of Sir Ernest Shackleton. One hundred years after Shackleton's death, the ship 'Endurance' was found at a depth of 3008 metres in the Weddell Sea, within the search area defined by Show more

Sir Ernest Shackleton: the Irish explorer in pursuit of an impossible dream