Ozark-St. Francis National Forests Rangers >> The Ozark National Forest covers 1.2 million acres, mostly in the Ozark mountains of northern Arkansas. Blanchard Springs Caverns, is a major Forest Service recreation area. The St. Francis National Forest covers 22,600 acres in eastern Arkansas, one of the smallest and most diverse forests in the nation. >> Museum volunteers have worked with the National Forest to compile a list of District Rangers, by Ranger Districts. >> See the attached PDF for the list of district rangers.