I suppose it's a little bit of both?! As long as they have beer...
"The 'Black MotoCross' is a mixture of sports, music, camping and a lot of bizarre stunts. It took a few years before it grew to be the greatest music festival of eastern Holland and the greatest motor-cycle cross event of Holland. All tastes are catered for: music, market, fair, theatre, camping facilities, activities for juveniles, and fun stunts. In 2011 there were more than 152.500 vistitors at the 'Black MotoCross'."
Thx for enlightening me David
Sounds like a nice family day out thing