In May 2003, Aron Ralston when he was on the way Blu canyoneering John Canyon, a boulder fell and pressed his right arm and breaking his arm. After trying for five days, lifting and breaking the stone, made the decision to carve his name, date of birth and death dates on the stone, drank his own urine because of lack of water and record video farewell to his family.
Finally after a dehydrated and delirious, he decided to bow his arm against the insistence of stone and broke the radius and ulna bones. Using a blunt knife on multiuse tool, he cut the soft tissue surrounding a broken arm. He then used the pliers to cut the tendons that hard. After Ralston was saved, his arm was retrieved by park authorities and removed from under the rock. Cremated and given to Ralston. He returned to rock and ashes sprinkled there.