Through its SNA program, the DNR preserves landscape features with extraordinary scientific and natural value. SNAs help maintain ecological diversity by protecting intact natural communities and rare plant and animal species. A few SNAs are so fragile that access is granted only for research or teaching, but most, like Wolsfeld Woods, are open to the public for nature study and wildlife watching. Wolsfeld Woods is the metro area's best remaining example of the Big Woods habitat that once covered south-central Minnesota. The closed canopy created by these huge trees allows only the most shade-tolerant shrubs and forbs to survive in the understory.
Wildflowers bloom in early spring when the sun reaches the forest floor.
The preserve's hilly terrain encompasses many small wetlands and most of Wolsfeld Lake. Louisiana waterthrushes, nesting Acadian and other flycatchers, warblers, vireos, barred owls, gray and red foxes, coyotes, snapping turtles, garter snakes. From Highway 12 in the city of Long Lake, take Brown Road north to County Road 6. Park in the northeast corner of the Trinity Lutheran Church parking lot across the road. The trail begins there.