Frankfort Crystal Lake RV Resort is Northwest Michigan's NEWEST Premier RV Resort and Campground. Located just a few short minutes from Frankfort and the Lake Michigan Shoreline and Sleeping Bear Dunes (voted the most beautiful place in America), Our oversized RV sites (50x80) will accommodate even the largest of rigs and provide you with the full services you deserve. Daily, Weekly, Monthly and Seasonal Rates are available. Come join us and discover Northern Michigan's Best Kept Secret!! OPEN MAY - OCTOBER.