Leaves of various tree species change color from green to yellows and reds in late September amid a pattern of tree trunks, in Porcupine Mountains Wilderness State Park, Michigan, USA.

Leaves of various tree species change color from green to yellows and reds in late September amid a pattern of tree trunks, in Porcupine Mountains Wilderness State Park, Michigan, USA. The park was established in 1945 to protect the last large stand of uncut hardwood-hemlock forest remaining in the Midwest.