Located outside of the village of Cedarville, Ohio, the indian mound within the park is believed to be a memorial or a lookout from an ancient Adena Indian community. Built somewhere between 500 B.C. and A.D. 100, the mound has never been officially excavated. Scientists think the Adena Indians used shells and baskets to scoop the soft dirt out of the nearby creek to create the massive structure. Indian Mound Reserve also has one of the most spectacular wildflower displays in early May, some of which are rare including White Trillium. It also features one of the largest groves of White Arborvitae, a tree on Ohio's protected species list which grows out of the limestone walls lining the park's Massie Creek Gorge. A comfortable trail of 3.56 miles is available for hikers.
