Sanilac Petroglyphs Historic State Park

Sanilac Petroglyphs Historic State Park, located near Cass City in Michigan’s Thumb region, is the home of Michigan’s largest known collection of early Native American teachings carved in stone. The carvings – called ezhibiigaadek asin, "written on stone," in the Anishinabe language – remain culturally significant to many Anishinabek.

To access the petroglyphs, visitors will walk along a quarter-mile, accessible trail consisting of hard-packed limestone to a roofed enclosure that sits over the petroglyphs viewing area. Find seasonal petroglyphs operating dates and hours.

The 240-acre park is managed jointly with the Saginaw Chippewa Indian Tribe of Michigan. The Sanilac Petroglyphs are among the 12 museums and historic sites preserved and interpreted by the DNR's Michigan History Center.

The park also features a mile-long, self-guided interpretive hiking trail loop that crosses a branch of the Little Cass River. Please note that this trail has roots and an uneven surface, and the trail can flood and may be muddy or impassable at times.

Admission to the petroglyphs is free; a Michigan State Parks Recreation Passport is not required for entry to either the park or the historic site.

Before visiting a state park, boating site or trail, it’s always a good idea to check the latest closures due to weather-related events, planned improvement projects and repairs. Visit Michigan.gov/DNRClosures.