What is the phone number for Hartwick Pines State Park Campground?

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Hartwick Pines State Park Campground is located at Camp Lavictoire Road, Grayling MI 49738. Hartwick Pines State Park Campground can be contacted at (989) 348-7068 or https://www.michigan.gov/dnr/0,4570,7-350-79133_79207_81175---,00.html