Nerstrand-Big Woods State Park -- 9700 170th Street East, Nerstrand, MN -- Near Northfield. In the spring, the park is a wildflower garden where hepatica, bloodroot, & Dutchman's breeches bloom. The dwarf trout lily is only found here. Relax by Hidden Falls in summer. Autumn brings bold colors in the maple-basswood forest, one of the last extensive stands of the "Big Woods."