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There is much to do at Interstate State Park along the beautiful St. Croix River. You can explore unique geology and stunning cliff-top views. Hike multiple trails through diverse habitats, canoe or kayak, or relax on an excursion boat. The park is also a popular destination for rock climbers. Visit in spring for trails lined with wildflowers. Come in fall for picturesque valley views. You can experience the park's glacial potholes during any season. These impressive potholes were carved into the rock by swirling sand and water thousands of years ago.