The Marion Engineer Depot

Historical marker location:

3007 Harding Highway East, Marion, Ohio

( Marker is on Harding Highway East (Ohio Route 309), on the right when traveling east.)

Marker installed: 2003

The Ohio River Valley was home to several Native American cultures before European settlement, including the Adena and Hopewell cultures. These cultures left behind many burial mounds and other archaeological sites that are now protected and preserved by the state of Ohio.