写一段关于《坚忍号：沙克尔顿的传奇南极远征》的内容简介，要求能把整部片子的内容和背景交代出来，并且内容简洁，能够吸引观众兴趣。
A retelling of Sir Ernest Shackleton 's ill-fated expedition to Antarctica in 1914-1916, featuring new footage of the actual locations and interviews with surviving relatives of key expedition members, plus archived audio interviews with expedition members, and a generous helping of the footage and still photos shot on the expedition.