‘Never for me the lowered banner, never the last endeavour’ SIR ERNEST SHACKLETONAPRIL 1916:After his ship Endurance was crushed by Antarctic ice and now trapped on a small inhospitable island, cut off from all hope of help, with winter approaching, Sir Ernest Shackleton made the fateful decision to attempt a risky, almost foolhardy voyage across the wild Southern Ocean to South Georgia with five of his men. From there, he would attempt to trek over unmapped and treacherous glaciers to reach...