Snowmobile rider Caleb Moore died Thursday morning, a week after crashing during the Winter X Games in Aspen, Colo.
Moore, 25, was attempting a backflip last Thursday when he ended up going over the handlebars and face first into the snow. The 450-pound snowmobile then rolled over him. After staying down for a while, Moore walked off with help and was taken to the hospital. The Texas native developed bleeding around his heart and other complications.