Niagara Cave is open seven days a week from May 1st through October 30th.  

To view our availability calendar and/or make a reservation, please click on the "Buy Tickets" link.


Tour availability is limited, online reservations are highly recommended.

Reservations can be made by clicking the 'BUY TICKETS" link.


If you are unable to make an online reservation on the desired day or time due to capacity restrictions, please give us a call and we may be able to accommodate you.  507-886-6606


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

Rated among the Best Caves in the U.S.!

Niagara Cave is frequently ranked among the top ten caves in the United States by many travel organizations and news outlets such as:


USA Today: Best Cave Winners (2016) | USA TODAY 10Best

Fox News: 8 amazing caverns in the US | Fox News

CNN​: 8 amazing American caves -

Attractions of America: Top 10 Most Amazing Caves in the USA 

MapQuest: America's 10 Coolest Scenic Caves - MapQuest Travel

Vacation Idea: 20 Best Caves in the United States


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 Rd. 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.

Please Note:  Starting July 20th, there is construction on the road leading to the cave.  

The section of County Rd 30 leading up to the cave is currently being resurfaced.  Please add a little extra time to your travel plans to account for this.

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!