Cass River, Sanilac Petroglyphs Historic State Park, Greenleaf Township, Sanilac County, Michigan.
Cass River, Sanilac Petroglyphs Historic State Park, Greenleaf Township, Sanilac County, Michigan. Drdpw · CC BY-SA 4.0

Sanilac Petroglyphs State Park

State Park · Michigan · Michigan Department of Natural Resources

Plan your visit

Trails & hiking

Hiking · Trail

Know before you go

Official site
www2.dnr.state.mi.us
Managed by
Michigan Department of Natural Resources

Getting there

Directions on Google Maps →

Things to do

Activities & features: Historic Feature · Picnic Area · Scenic Overlook · Water Access

Photos

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Guides for the trip

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Sources: Wikimedia Commons / editorial, State agency, USGS PAD-US · updated 2026-09-12