AT A GLANCE
Why go?
Cannon River Wilderness Area is an 850-acre preserve of wooded river valley along the Cannon River in Rice County, Minnesota, stretching roughly five miles between Northfield and Faribault. A living remnant of the state's legendary Big Woods ecosystem, the park protects rare habitats including maple-basswood forest, calcareous fen, bluff prairie, and oak savanna — ecosystems that have vanished from the surrounding agricultural landscape.↗↗
With about five miles of hiking and horseback trails, a rustic footbridge spanning the river, primitive campsites, and a canoe launch, the area rewards visitors with a genuine sense of wilderness just minutes from the Twin Cities metro. The 4.5-star rating from Google reviewers speaks to how rare and satisfying this kind of untamed landscape is in southern Minnesota's farmland.↗
A Landscape Carved by Ice
The story of this valley begins around 10,000 years ago, when enormous volumes of glacial meltwater cut the Cannon River deep into the bedrock during the waning stages of the last ice age. The river now slices through the Shakopee dolostone, exposing a geological cross-section visible in the towering limestone bluffs on either side. Stacked successively at the bluff tops are layers of St. Peter sandstone, Glenwood shale, and Platteville dolostone — all laid down during the Ordovician period, roughly 480 million years ago, when Minnesota sat beneath a tropical sea. Water percolating through the porous sandstone creates springs and seeps at the base of the bluffs, feeding fens and sustaining moisture-loving plant communities that make this park botanically extraordinary.
