Someone was asking about Moab trails in the US recently... check this out:

http://vimeo.com/7209325

A very technical trail with some major exposure that descends from the top of Poison Spider Mesa to the Colorado River. Done at the tail end of an epic ride from Gemini Bridges to Gold Bar Rim to Blue Dot. A must do for anyone craving a technical, ledgy downhill trail. Short but worth it.