Join us for the BONFYRE TRAIL FEST at the DTE Energy Foundation Trail in Waterloo State Recreation area, the largest park in Michigan's Lower Peninsula!  The Bonfyre Trail Fest at the new DTE Energy Foundation Trail will make your dirty dreams come true! The flow of this dirt roller coaster is unlike any other trail in the area. As you traverse through pines, along steep embankments and around boulders, you'll wonder if you're out west... until the stunning lakes and wetlands remind you that you are indeed in PURE MICHIGAN!