127 Hours: The Climber Who Cut Off His Own Arm to Survive | TripMag Stories

On the afternoon of 26 April 2003, a 27-year-old American climber dislodged an 800-pound boulder in a slot canyon in southern Utah. The boulder pinned his right arm against the wall. He was 8 miles from the nearest road. No one knew where he was. Five days later he amputated the arm with a dull pocket knife and walked out.