This Missouri Property Has a Cave You Can Swim In — and a Spring That Produces 27 Million Gallons a Day

Most Zillow listings can be summarized in a sentence. Keener Springs in Williamsville, Missouri takes a little longer — because it comes with a water-filled cave, half a mile of Black River frontage, one of the largest privately owned natural springs in the country, and a Civil War history that most museums would envy.

What "65 Acres" Actually Means Here

The centerpiece of the property is Keener Spring itself — a natural spring producing up to 27 million gallons of water per day, making it one of the most powerful privately owned springs in the state. The spring feeds a picturesque spring pond, which crosses under a bridge before flowing toward the Black River. That river runs along a full half mile of the property's edge, with a gravel beach and a bluff wall that rises to frame the property's other defining feature: Keener Cave, a large water-filled cavern at the base of the bluff that serves as a natural swimming hole unlike anything you'll find on a standard MLS search. Liggett Creek also cuts through the land, adding yet another water feature to a property that is, at this point, more water than most people ever own. The terrain itself is a mix of rolling hills, mature timber, and river bottom — the kind of Ozark landscape that looks like a postcard and feels like a different world.

History, Income, and What Comes Next

During the Civil War, Keener Springs served as a field hospital — a piece of history embedded in the land itself that is genuinely rare on a recreational property listing. The grounds have since operated as a vacation rental compound, wedding and event venue, and short-term rental destination, with a recently remodeled main home and three income-producing cabins on site. The property is currently being sold at auction with a seller reserve, so there is no published asking price — the final sale is subject to seller confirmation. For context: southern Missouri Ozark land with this combination of water features, history, and existing rental infrastructure does not come to market often, and the listing notes as much. A new Interstate 57 interchange, scheduled for completion in fall 2026, will add further accessibility to the region. Whether the vision is a private family legacy, a continued short-term rental operation, an expanded event venue, or something else entirely, the infrastructure is already in place.

The Internet Has Thoughts

Naturally, this listing caught the attention of Reddit's r/zillowgonewild community. See what people are saying about it here.

A swimming cave, a spring that never stops, and half a mile of river — all on one deed. View the full listing here.