Aaron Ralston, a 27-year-old mountain sports fanatic from Colorado in the United States, found himself in dire straits* alone in a canyon* in the desert when a 500kg rock came crashing down the canyon to smash his right hand and trap it against the canyon wall.(_______________________). At the last minute the plans for a trip with his climbing partners had fallen through, and on the spur of the moment he decided to head out on his own to cycle up a long mountain trail, leave his bike and then walk down the Blue John canyon. No one had the slightest idea where he was.