In 1882 a mapping error described the land of the Lost Forty of being underwater, park of a lake, in fact. This caused the virgin pine of the area to be left behind by loggers at the turn of the century. Now a one-mile self guided nature trial winds its way through the majestic Lost Forty, a 144-acre tract of white and red pine,located in the Chippewa National Forest. Many of these trees are up to 350 years old and between 22-48 inches in diameter.