Several state parks in western Minnesota preserve parts of the state’s once vast tallgrass prairie. The best of these by far is Glacial Lakes State Park. It is located in the Leaf Hills, a 10 to 19 mile wide region of glacial hills stretching from Detroit Lakes to Willmar. Hiking trails on treeless, wide open prairie lead over rolling hills, eskers, kettles, and moraines. One section of the prairie loop trail follows ridge line with spectacular views of the prairie below. Another trail leads through bur oak forest. In all, there are 16 miles of natural surface hiking trails. If you visit, come early and plan to spend the whole day.