I work for the phone company here, and one of our engineers is heading the group trying to convert (I think it's Hatfield) park into a 4 wheelin(off road) park. We dropped off some poles already, and I'm not sure when it'll be ready for action. It's next to the Merced River, so mud can be plentiful...but the local dirt is really really sandy. There's a couple tiny hills, but not near like going to Hollister or Rubicon. The park is about 6-ish miles southwest of Hilmar. You take HWY165 to Williams(a mile south of Hilmar), then go west & follow the signs.