Sanilac Petroglyphs Historic State Park
Michigan State Historic Park · Cass City, Michigan
Sanilac Petroglyphs Historic State Park sits in farm country near Cass City, in the Thumb of Michigan. It protects the only known petroglyphs in the state, about 1,000 years old, carved into a low outcrop of sandstone. There are about 100 carvings, among them archers, thunderbirds and animals, and the place is sacred to Anishinaabe peoples, so it is best treated as a living site and not as a curiosity. The rock is shallow and weathered, and it is kept under an enclosure to slow the damage from rain, frost and past visitors. Most people see it on a guided tour, usually offered on a limited seasonal schedule, often weekends, that you should confirm before driving. The walk is short and easy. Allow about an hour, plus the long drive. It suits history and Native heritage travellers, families with patient children, and anyone already exploring the Thumb. It is small, and it is quiet. Do not touch or rub the stone, bring insect repellent, and expect a Recreation Passport to be needed for parking (confirm).
8251 Germania Road, Cass City, Michigan, 48726, United States
Access is seasonal and limited, and it is organised around guided visits more than open hours. The usual pattern is tours on selected days from late spring into early autumn, often weekends, with the park closed to walk-in viewing of the carvings the rest of the time. Exact days, start times, group limits and whether you must book ahead change from year to year, so confirm with the Michigan DNR or the park before you set out. The grounds, trail and parking may be reachable outside tour times, but the carvings sit inside an enclosure that is normally locked when no guide is present. Winter access is minimal, and the rural roads can be poorly cleared after snow. A Michigan Recreation Passport is commonly needed for the vehicle (confirm).
Sanilac Petroglyphs Historic State Park on Spottos · Explore more places on Spottos