Erzberg - The hardest 1 day offroad marathon in the world. Erzberg is a Iron Mountain in Austria, Europe. Every year over 3000 enduro riders from all over the world meet here to chalange the mounten. Only 30 of them finish. :] Meet David Knight, Chris Pfeifer, Travis Pastrana and his crew from the USA. This video is from year 2004!Enjoy 2004, enduro, Erzberg, Knight, offroad, Pastrana, Pfeifer