http://www.tmba.tv/broadcastanimation/stunt-junkies/ TMBA is the New York animation studio that created the "physics behind the stunts" animations for Discovery Channels "Stunt Junkies" TV show.
In this stunt Bob Burnquist rolls down a on a custom built 40 ft. mega ramp roll-in, and then grinds on a 40 ft. rail that extended over the Grand Canyon. Once he reaches the end of the rail, Bob then skydives/base jumps 1,600 ft. into the canyon.
