Everest

The 40-minute film is narrated by Liam Neeson and shot entirely in IMAX format. It includes a vivid description of the training required in order to climb, and the challenges encountered such as avalanches and lack of oxygen. This film had been in production at Everest during the 1996 Mount Everest disaster, in which a group of mountain climbers were trapped by a blizzard near the summit. This film contains footage of these people, as IMAX crew members interrupt filming to aid the stricken climbers. —Wikipedia.org