Hartwick Pines State Park is a state park and logging museum located in Crawford County near Grayling and I-75. It is the third largest state park on Michigan's Lower Peninsula and the state's fifth-biggest park overall. The park contains an old growth forest of white pines and red pines that resembles the appearance of all of Northern Michigan prior to the logging era. Also to be noted is Interlochen State Park, which is the oldest state park and the other remaining stand of virgin Eastern White Pine in the Lower Peninsula.