Sleeping Bear Dunes Wilderness

From Recreation.gov

White Pine Backcountry Campground falls within the park's Platte Plains prescribed fire unit. The prescribed fire plan authorizes prescribed burns to be conducted during the spring months of March, April, or May and during the autumn months of September, October, or November. During those months, prescribed fires may be ignited any time weather conditions are favorable necessitating a campground closure. For this reason, reservations may be cancelled, and refunds issued with little notice.