Stephens State Forest in south-central Iowa is Iowa’s largest state forest, with seven units totaling more than 15,500 acres in five counties. The forest’s primary function is to provide an example of forest management for Iowa woodland species. First established in the 1930s with tree plantings by the Civilian Conservation Corp, Stephens State Forest is also a backcountry destination for outdoor enthusiasts interested in hiking, horseback riding, camping and hunting.