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		8251 Germania Road Vehicle Permit Required: Yes Cass City , MI 48726 Approximate Size: 240 (Acres) Phone Number: (989) 856-4411   TTY/TDD711 (Michigan Relay Center) Location Map/Driving Directions   Tell Us About Your Visit Cross Country Ski Hiking No Facilities Identified Click Here for Activity, Facility and Accessibility Details No Campgrounds Identified No Trails Identified     Rock carvings, known as petroglyphs, etched into a sandstone outcrop are a mystery. Yet they give us a glimpse into the lives of early Native American artists. Calendar of Events Petroglyphs Twitter Within the 240 acre parcel historic site are the Sanilac Petroglyphs. Michigan's only known rock carvings attributed to Native American workmanship in the Lower Peninsula of Michigan. The park will have an Open House on June 20. Click here to view the event description. The petroglyphs may also be available for a special viewing during the rest of the year via a "Use Permit". Contact the park at 989-856-4411 and ask to speak to the park supervisor. Otherwise, the archaeological site is indefinitely closed to the public. The rest of the park contains a one mile hiking trail that crosses the Little Cass River in two places. The trail is open from 8 a.m. to 10 p.m. year-round. Send any correspondence to Sleeper State Park, 6573 State Park Rd, Caseville MI 48725.

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