Aron Lee Ralston (born October 27, 1975) is an American outdoorsman, engineer, mountain climber, and motivational speaker. He is best known for having to amputate his own right arm to free himself from a boulder in Blue John Canyon, in eastern Wayne County, Utah on April 26, 2003. The event was the subject of his autobiography "Between a Rock and a Hard Place" and the 2010 movie "127 Hours", starring James Franco.