Had my first crack on a mountain bike descent course today - WOW!! - takes a lot of effort to make it to the bottom in one piece!
The course is similar to the slopes ..green, red and black trails - and the black looks evil! (I did the red). Ended up absolutely filthy and covered in mud - but what a blast.
It's not the thrill of skiing - but it's a great filler until I go in Feb ...