Explore the hidden history of Spring Lake Regional Park with a guided hike along park trails. Discover the rich human stories behind this natural park setting by reading clues written on the landscape. Cost is $12 and reservations are required. Call 763-550-6700 to make a reservation. There is a 20 percent discount for groups of four or more. This program is open to all ages. Children 11 years and younger must be accompanied by an adult.