August 24 @ 9:00 am - 5:00 pm EDT Event Series Lost Rocks & Mackinac Millstones at Historic Mill Creek Lost Rocks & Mackinac Millstones at Historic Mill Creek Historic Mill Creek Mackinaw City While limestone formations are famous at Mackinac, other geological wonders lie hidden underfoot. Today at Historic Mill Creek special programs highlight the grist mill which once ground grain into flour.... Read more » $8.00 – $10.50
