Nelson-Kennedy Ledges State park on Rte. 422 in Portage County is a hidden gem. Short hiking trails and a nice family picnic area in a geologically unique area make this a great spot for families with small children.
The area is glacially eroded sandstone. Although Ohio does not have limestone caverns like Kentucky, these caves and ravines are the next best thing.Try to find the Devil’s Icebox: a large cavern with a creek running through it. The water keeps the cave cool and misty even on the hottest summer days.
Nearby is Nelson Ledges Quarry Park, a swimming area and Music Venue and worth a look for adults.