In Ryan's words:
The ride was EPIC in every way... bone rattling, brain shaking cobbles. They are a totally different experience, I have never ridden anything quite like them, downhill, uphill, flat.. they just suck the life and speed out of you..
If you are not familiar with Koppenberg...no more has to be said out loud...
A piece of advice from a fine Finnish friend; bring your mtn biking shoes.
Interesting facts from Koppenberg:
•"Koppen" is an abbreviation for cobblestones which in Dutch slang language are called kinderkoppen, or "children's heads".
• Incline of up to 22%.
• Also used for the annual Cyclo-cross Koppenberg race. The cyclo-cross course follows only part of the cobbled road, using some of the
surrounding fields and roads for the other sections of the course.