Learn about the history of Iowa! From glaciers carving the land to prehistoric fossils to Native American history, there is a lot to discover! Get hands-on as we dig for fossils and artifacts! At 10 am, North Overlook Beach Playscape. Programs are free of charge. Outdoor activities may be cancelled if raining or inclement weather. For more information, contact the Corps of Engineers office at (641) 828-7522 or (641) 628-8690.