Remarkable Ohio


Below is a complete listing of all Ohio Historical Markers. To find a detailed marker listing including text, photographs, and locations, click on a county below. Our listing is updated by the markers program as new markers are installed and older markers are reported damaged or missing.

ALERT (February 2024): Marker damaged and temporarily down for repair.

6-33 Devil’s Backbone

Side A: The knolls and ridges found in this vicinity were formed by deposits of gravel left by the retreating glacier which covered much of Ohio during the Pleistocene Era 10,000 years ago. Popularly known as “Devil’s Backbones,” these ridges can be several miles in length. As the glacier retreated it also left large round depressions in the earth’s surface known as kettlers. A kettle was formed by the melting of a buried mass of ice.
Side B: Same
Sponsors: The Country Connection Club and The Ohio Historical Society