Aron Ralston

Aron Lee Ralston is an American mountaineer, mechanical engineer, and motivational speaker, known for surviving a canyoneering accident in 2003 by cutting off part of his own right arm. On April 26, 2003, during a solo descent of Bluejohn Canyon in southeastern Utah, he dislodged a boulder, pinning his right wrist to the side of the canyon wall. After five days, he had to break his forearm and amputate it with a dull pocket knife to break free.