Excerpt from the Science of Mountain Biking MTB documentary DVD charting Nathan Fa'avee, Alastair Matthews and Tony "T-Man" Moore's efforts to conquer the extreme altitudes of the Andes including the 20 mile downhill Taquesi Trail and a 56 mile uphill world record ride attempt. Beautifully shot by NHNZ you can get the full DVD from Beckmann Direct; http://www.beckmanndirect.com/Extreme_xforce_MountainBiking.php