Arch Rock - Mackinac State Historic Parks | Mackinac State Historic Parks

Arch Rock

Location: East side of island near the shoreline, Located by taking Lake Shore Road, Arch Rock Road, Arch Rock Bicycle Trail, or Huron Road Rising 146 feet above the water, Arch Rock is a natural curiosity which spans fifty feet as its widest point.  It was formed over thousands of years by wind and water eroding soft rock below, leaving only the hard breccia rock which forms the arch.