The northwestern peaks of Alpental, Chile, and the mountains of Stowe, Vt., are just some of the jaw-dropping locales that filmmaker Warren Miller visits in this thrilling segment of his three-disc series for the Riders Collection. His subject: so-called freeriders, who fling themselves down slopes with the agility of dedicated athletes and the fearlessness of soldiers. No stunt is left unturned in Miller's pursuit of moviemaking perfection.