Galloway, Ohio. Battelle Darby Creek features more than 7,000 acres of forest, prairies and wetlands. It stretches along 13 miles of the Big and Little Darby creeks, both State and National Scenic Rivers. Besides the areas surrounding the creeks, there are also over 1,600 acres of restored wetlands and prairies. Bison have been reintroduced to the park and roam freely within two enclosed pastures.