There is so much to do at Interstate State Park, located on the beautiful St. Croix River. Visitors can climb the cliffs of the St. Croix River Dalles, canoe the flat-water, watch kayakers rush through the rapids, or relax on an excursion boat. Spring brings a great diversity of wildflowers and in fall, the St. Croix River Valley forest is ablaze in the autumn colors of red, gold, and orange. The geology that formed this park intrigues visitors, and brings geologists from all over the world. At least 10 different lava flows are exposed in the park, along with two distinct glacial deposits, and traces of old streams valleys and faults. During the summer, hike the trails and explore the glacial potholes that make this park unique.