Plan an extended visit to St. Croix. With over 34,000 acres and two great riversthe Saint Croix River, which is a National Scenic Riverway, and the Kettle River, a State Wild and Scenic Riverthere's so much to do. Explore the rivers by canoe or with a fishing pole. Swim at Lake Clayton or climb a fire tower. The park has miles of trails for hikers, horseback riders, bicyclists, snowmobilers, and cross-country skiers. Campers can reserve drive-in, walk-in, backpack, and horseback campsites. Large groups can reserve the modern group centers or the primitive group camps.