Niagara Cave

Harmony, MN

4 (5 reviews)

Where are we going?

Address: 29842 Co Rd 30, Harmony, MN 55939, USA How do we get there? Number: 800-837-6606
Suggest edit

About this activity

You didn't think when you wanted an adventure, we would send you UNDERGROUND did you? Well, that's where we're going!

Niagara Cave is one of the most fascinating and unique geological attractions in the Midwest. It's a place that was formed over millions of years, and now YOU get a chance to explore it! Water has sculpted an entire underground system, with canyon-like passageways, and it's through tours that the family can learn all about them!

The one hour tour will take you one mile underground, and you will experience fossils that are around 450 million years ago. Can you imagine what life on earth was like back then!?

The formations in the cave vary, which is what makes the tour that much more interesting. They can be delicate, and the can be HUGE! There is even an underground waterfall that you can enjoy (parents, if you want, there is a subterranean wedding chapel to get married in, or renew vows, too!)

Niagara Cave is always 48 degrees F (9C) so dress appropriately. It also never matters what the weather is - you're underground! So no excuses on those rainy days not to get out of the house!

Once you have finished your tour, you can enjoy some above the ground fun, with an 18 hole mini golf course, or spend some time panning for gemstones and fossils. Do you think you might find something 450 million years old too! 

There is even a playground and a picnic area so you can really make a day of it.

A great experience to show kids how incredible nature can be, and give them a learning experience at the same time!

Niagara Caves....millions of years in the making for your family day out!


Activity location

How much does it cost?






$8 (ages 4 to 12)


Free Under

3 years with paid adult


Last Updates


Niagara Cave FAQ’s

They are preserving an incredible feat of nature, so if there are any regulations, please follow them and help them protect this beautiful cave system!

Strollers can't be used on the tour.

Check out the Saturday Night Lantern Tours at 6:30pm and 7pm from June to August! Great fun, AND mini golf will stay open until 8pm on those days!

If you want to take some pretty amazing gifts home like precious rocks and gems, then head to the gift shop! There are great books on the topic too

If you want to bring a group, give them a call about what they can do, and then just enjoy!

Strollers can't be used on the tour.

There is a picnic area that you can use if you want to bring your own food. A great way to enjoy the day!

With all the stairs on the tour, it's not accessible. However the gift shop, mini golf and gemstone mining are all accessible.

Wear walking shoes, not flip flops. Certainly no bare feet

What people are saying?

Rate & Write a Review

Your rating *

Review us on Trustpilot

We value your feedback, please take a moment to leave a review on Trustpilot.

Leave a Review