Yes, they actually call this "The Painmaker" in Cross. Cyclocross organizers could have the guys and gals ride over some nicely packed sand, BUT NO the sand is roto-tilled between each race (and sometimes they get a quick till in between laps!)
Notice the evil smile on the sadist operating the painmaker in the picture above.
Off to a Cross race today. We'll see what kind of torture devices Mansfield Hollow has in store for the riders. My goal is to run from one torture device to another to get some good pictures of riders in agony. hahahahahaha.