One of the stages in the da Vinci Days kinetic sculpture race is the infamous mud bog. At Crystal Lake Park in Corvallis, they create a deep, muddy mess for the racers to drive through before getting hosed off and entering the river for the next stage. Some never make it out (on their own at least). Most breezed through the long stretch of mud, only to get hung up trying to exit the course and climb back out to dry land. For human powered machines this is quite a work out, I'm sure. This pair of shots are of one of my favorite sculptures. In the second photo, the team is taking a quick pause to plan their attack after stalling out in that last crucial moment. I believe they were eventually successful at making the corner, up and out of the mud without outside assistance. Others were not so lucky.