Niagara Cave is open for 2021 Season!

Tours are available by reservation only.  We are unable to accommodate walk-ins at this time due to Covid-19 restrictions.  Reservations can be made by clicking the "Buy Tickets" link below.

Online booking for tours is now available! 


Note: Due to COVID-19 restrictions and concerns, the following procedures will be implemented: 

  • Masks covering your nose and mouth are required at all times in the building and the cave; no exceptions. If you are unable or do not wish to wear a mask, please do not plan to visit the cave at this time. 

  • Hand sanitizer will be provided and must be used prior to entrance.

Please note: Niagara Cave is a fairly strenuous tour with many stair steps. If you are uncertain of your ability to do a strenuous tour while wearing a face mask, you may wish to consider visiting Niagara Cave at a later date when face coverings are not mandated.

For the month of May:  We are open for tours by reservation only at this time.  Just click "Buy Ticket" on this website to purchase your tickets and reserve your date and time. 


  • Tours in June through October: On-line booking will be available soon!

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

Please continue to check this website for future tour availability and 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!