The Chicago Wilderness is a network of more than 200,000 acres of protected land in the Chicago region, extending from Wisconsin to Indiana. This Web site describes the Chicago Wilderness and what makes it such a valuable resource. It also gives details on how to visit or volunteer. A relatively large section discusses threats to the biodiversity of the region and how the Chicago Wilderness is addressing those threats. This site is a great introduction to this network of natural areas, with easy to navigate drop down menus, many attractive photos, and text written for a general audience.