Porcupine Mountains Wilderness State Park, in Michigan"s Upper Peninsula, is considered one of the few remaining large wilderness areas in the Midwest. Visitors can follow the park"s Escarpment Trail, seen here, up to striking viewpoints of popular attractions in the park, like Lake of the Clouds and the Upper Carp River Valley. And in autumn, when this photo was taken, hikers are treated to a kaleidoscope of foliage as the hardwood forest canopy alights with fall color.