From an ancient sea to massive glaciers, Ohio’s geologic past was quite fascinating. It’s hard to imagine that sea creatures, giant dragonflies, dinosaurs, and woolly mammoths all lived here at one time. At this program, we’ll talk about the geology of the area as well as the prehistoric animals that once lived here. Natural Discoveries is an award-based series of free nature programs designed for ages seven to adult. Themed hikes are held on Sundays, and hikes that explore seasonal happenings are offered on Wednesdays. No registration is required. Please visit the park district's website for a brochure listing complete hike details and dates. Ages 7 to adult. Free.