Not as cool as the other pics, but I just wanted to share this one... "MY" trail (and as far as I'm concerned you won't get much better in Holland haha, no offence though but this is my "home"):
...of Arthur's Seat. I often travel to Scotland to work for an Edinburgh based company. I make sure I take my wheels along because this steep rocky trail is the perfect wind down after a day stuck in the office - not to mention the 360' view you get from the top!
One the most epic trails I have ever, ever ridden. Took us six hours? Trail building by a master builder. (As you ride it you can't help thinking that the builder is screwing with your head).