A great free ride area you can go all day! giant logs, tight twisty riverside single track. there are tons of neat obstacles ie; picnic tables, pallets over 3' logs.If you run the trail from the yates parking lot stick to the river side as much as possible after about 1 1/2 miles of dirty nasty log filled, broken down tree rooted,(after a good rain it gets a little wet):) you'll come to a couple of fire roads stay straight eventually you will come to a clearing with a semi large steep hill to your left!!! as tempting as it is stay to the right and follow the the river trail again. you will eventually run out of single track there follow the trail to the left and it will open up to a fire road, follow that past the big hill and up and around the backside of the hill and you will then find one of the best, fastest(bring your knee and elbow pads) switchback sections in lower mich!!! tons of stairs, about 30 different ways to o down this hill system! after hurting your self very bad you get to head back the same way you came in!!!! have fun!!