Nestled in the Rocky River Valley, Rocky River Nature Center offers spectacular views of a 360 million year old shale cliff from the deck overhanging the river. Go backwards through time inside the Nature Center as you explore exhibits about the early inhabitants of the valley including the giant fish of the Devonian sea, Dunkleosteus. The Nature Center has wildlife exhibits, free events, outdoor gardens, and more than five miles of trails weaving through Rocky River Reservation.