Join a park ranger for a one-hour snowshoe hike through the park's tallgrass prairie. The hike will cover less than one-mile. Participants must have sturdy boots. Dress appropriately for the weather and bring water. The park has some snowshoes to lend. Call (319) 643-2541 to reserve a pair. The hike is suitable for ages 5 and up. Meet at the Herbert Hoover Presidential Library and Museum.