Niagara Cave is open for the 2021 Season!

Tour availability is limited, online reservations are recommended.

Reservations can be made by clicking the "Buy Tickets" link below.


The mask mandate has been lifted in the state of Minnesota.​ You may wish to wear a mask during your visit to Niagara Cave due to the confined nature of our tours. 

We are open now through October 31st.

Reservations are recommended due to limited availability.  To view an availability calendar and make a reservation, simply click on the "Buy Tickets" link.


  • Organized groups (schools, scouts, etc.) please call for more information or to make reservations.

Please continue to check this website for updates or changes.


We invite you to visit our family owned and operated cave, which has been rated among the best in the nation, to witness nature's power and beauty underground.

In Niagara Cave you will have the opportunity to see natural canyon-like passageways sculpted by water from an underground stream.



Southeastern Minnesota is known for its karst topogrography. Karst landscapes are dominated by limestone rock formations very near the surface. Common features of karst regions are sinkholes, springs, disappearing streams, bluffs, and cave systems. 

The cave system itself began forming millions of years ago, as water found its way into cracks and crevices in the limestone and slowly widened them, creating passageways that now give us a look into the geology below our feet in this Driftless Region. 



29842 County Hwy. 30, 

Harmony, MN 55939

Tel: 507-886-6606

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Directions from Harmony: 

2.5 miles south on Minnesota 139 (aka Main Avenue), then 2.5 miles west on county 30 and watch for signs.

To get to Harmony from:
Minneapolis, MN: Take Hwy 55 south where it merges with Hwy 52 south. Stay on 52 south to Harmony (about 2 hours and 15 minutes)

St. Paul, MN: Take Hwy 52 south to Harmony (about 2 hours and 15 minutes)

Rochester, MN: Take Hwy 52 south to Harmony (about 55 minutes)

LaCrosse, WI: Take Hwy 44 west to Harmony (about 1 hour 20 minutes)

Scenic route: Take Hwy 16 west through Lanesboro, then south on Hwy 52 to Harmony

Decorah, IA: Take Hwy 52 north to Harmony (about 35 minutes)

Please note: You do not need to take gravel to reach Niagara Cave! 

Don't let your GPS lead you astray!