In 1942, Aldo Leopold called the old-growth northern hardwoods in Michigan's Porcupine Mountains the last stand because it was one of the few remaining uncut blocks of a forest type that once covered seven million acres in the Lake States. Many years later, when this photo of an old sugar maple was made near the Little Carp River, the stand still remains for visitors to see and feel what the virgin forest was like. Fortunately, the 35,000 acres of old growth are now a protected part of the 60,000-acre Porcupine Mountains Wilderness State Park in Michigan's Upper Peninsula.