Shackleton's ill-fated Trans-Antarctic expedition of 1914 is an amazing story of perseverance and resourcefulness. If you haven't read up on it, I highly recommend Alfred Lansing's <i>Endurance</i>, or Shackleton's own <i>South</i> (which is in the public domain, and can be found as an eBook for free, even on Amazon).<p>Why there hasn't been a major motion picture about it, I'll never know.