The Men Who Watched the Horizon on Elephant Island

In April 1916, twenty-two men huddled beneath two overturned lifeboats on Elephant Island, a desolate spit of rock near Antarctica. Their ship, the Endurance, had been crushed by pack ice months earlier. Ernest Shackleton and five others had set out in a tiny boat across eight hundred miles of the most violent ocean on earth to fetch rescue. No one knew if they had survived.…