8 harrowing survival films that test the human spirit

From the wilds in 'The Revenant' to the deep waters of 'Sanctum,' these films offer a breathtaking glimpse at humanity and nature.

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127 Hours 127 Hours (Photo: 127 Hours)

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'127 Hours'

"127 Hours," from British director Danny Boyle, tells the incredible true story of canyoneer Aron Ralston and his struggles to survive after being trapped against a boulder.

Ralston, played by American actor James Franco, was hiking in Blue John Canyon in Utah in 2003, when an 800-pound rock became dislodged and pinned his arm. After five days of weathering the elements and rationing his food and water, he decided to take drastic measures to free himself

The film, which caused some people to faint during previews, went on to earn six Academy Award nominations, including Best Picture.

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