Hartwick Pines State Park is a public recreation area covering in Crawford County near Grayling and Interstate 75 on the Lower Peninsula of the U.S. state of Michigan. The state park contains an old-growth forest of white pines and red pines, known as the Hartwick Pines. It is claimed by the Michigan Department of Natural resources that this old growth area, along with the Red Pine Natural Area Preserve in Roscommon County resembles the appearance of all Northern Michigan prior to the logging era. These areas do, however, lack the reoccurring low intensity fires which once occurred throughout northern Michigan, impacting regeneration of red pine and eastern hemlock, as well as leading to an increased content of hardwood species such as sugar maple and beech. History The Hartwick Pines are a old-growth remnant of a pine grove that was withdrawn from logging by a local timbering firm in 1927—a time when very little old-growth pine remained in northern Michigan. Karen Michelson Hartwick, widow of lumberman Major Edward Hartwick, donated the grove, which was then in size, and 8000 surrounding acres (32.4 km2) of cutover land to the state of Michigan as a memorial to the logging industry. Sallin Hansen Lumber Company heavily logged much of the property within Hartwick Pines State Park during the 1880s and 1890s. The Civilian Conservation Corps planted many of the park's trees in the 1930s as part of a massive restoration effort. Hence, this forest is known as "second growth." On November 11, 1940, the Armistice Day Blizzard badly damaged the Hartwick Pines old-growth pine grove. of old trees were destroyed by windthrow from this and other storms, leaving behind the that remain. Logging museum The Hartwick Pines Logging Museum was erected by the Civilian Conservation Corps (CCC) in 1934–1935. It contains recreated exhibit rooms, photographs and artifacts of the lumber boom years of northern Michigan. The museum is located in two replica logging camp buildings and has outdoor exhibits of logging equipment and an enclosed steam-powered sawmill that is operated during summer events. The museum is administered by the Michigan Department of Natural Resources' Michigan History Museum. Activities and amenities The Michigan Forest Visitor Center contains an exhibit hall on the history of the forests in Michigan, an auditorium, classroom space, a bookstore operated by the non-profit Friends of Hartwick Pines, and restrooms. The visitor center has an auditorium that can seat 105 people