Documentarian George Butler ("Pumping Iron") examines intrepid explorer Ernest Shackleton's daring trek into a harsh and unforgiving region with this fascinating film, based on the book by Caroline Alexander. Original photos from the expedition are complemented by stunning modern footage of the area and interviews with descendants of Shackleton's crew members. Narrated by Liam Neeson. 97 min. Widescreen (Enhanced); Soundtrack: English Dolby Digital Surround.