Mud Races, photo by StormchaserMike Photography.

Just when you think you’ve seen it all, it turns out that you haven’t.

Mud Day is an annual affair held in early July at Hines Park in Westland. The recipe for fun is simple – 200 tons of dirt, 20,000 gallons of water and a bunch of people who care more about fun than fastidiousness.

Here’s a nice news report on Mud Day.

Check this out bigger and see a lot more in Mike’s massive 2011 Wayne County Parks Mud Day slideshow.