Pleasant Valley Conservancy State Natural Area, about 4 miles south of Black Earth, Wisconsin, protects an unusually diverse mix of native communities, from prairie, marsh, and wetland to oak savanna and woodland. Especially important are prairie remnants on a south-facing ridge, where restoration begun in 1995 reversed earlier agricultural impacts and helped recover characteristic grasses and wildflowers, including uncommon and protected species. The site also supports rare savanna plants, spring wildflowers on its cooler wooded slope, and a notable bird community. With shared private stewardship and support for management, it stands as an important example of prairie and savanna restoration in southern Wisconsin.