Part two of Born From Junk traces the rise of mountain biking as it came into its own as a full-blown sport. In less than a decade, Colorado's scene went from cruising around on klunkers, to scratching in clandestine singletrack, to riding dedicated mountain bikes on expanding networks of sanctioned trails. The sport quickly grew to attract large crowds at races in hotspots such as Gunnison and Crested Butte, eventually debuting as an Olympic sport at the 1996 Summer Games in Atlanta, Georgia.