NORTH LIBERTY, Ind. (AP): A northern Indiana park that includes a restored slice of some of the prairies that once covered about 15 percent of the state is preparing to open its annual prairie maze.

Potato Creek State Park's prairie maze opens to the public Sept. 13, giving visitors a chance to wander through 1.25 miles of meandering maze pathways cut through a tallgrass prairie filled with grasses that grow about seven feet tall.

The park about 10 miles southwest of South Bend includes eight stops with riddles that will help visitors discover the maze's mystery image.

The maze is free but admission to the park costs $5 for in-state vehicles and $7 for out-of-state vehicles. Maps of the maze are available at the park's entrance gate, park office and nature center.