Lake Medina (State Route 18 entrance) – 10 to 11 a.m. Join us for an easy walk to observe the unfolding of nature all year long in the parks. Natural Discoveries is an award based series of free nature programs. Themed hikes are held on Sundays, and hikes that explore seasonal happenings are offered on Wednesdays. Please visit the park district’s website for a brochure listing complete hike details and dates. Ages 7 to adult. No registration is required. Free.