Most of us probably know that Minnesota is chock-full of waterfalls. They’re in every region of the state, they’re insanely beautiful, and everyone should visit as many as possible. Most are in the obvious places – in state parks or the Boundary Waters – but a few are harder to find. There’s an underground waterfall in Minnesota that just might be the hardest of all to find. But when you do, you’ll never forget it. Read on to learn about Minnesota’s rare underground waterfall that you’ll have to see to believe:

Niagara Cave is a popular spot in the town of Harmony, Minnesota. It's not far from Mystery Cave. Address: 29842 County Highway 30, Harmony, MN 55939.
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The cave, first discovered in 1924, was created by millions of years of erosion. Water cut through the limestone to create a series of otherworldly passages.
Bruce Guenter/Flickr
Visitors venture 200 feet below the ground to explore Niagara Cave on a series of railed pathways. The paths offer views of the cave's narrow corridors, highlighting many rock formations.
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For example, ancient fossils line the walls of the cave. Still embedded in the rock, they give a glimpse of life on Earth from millions of years ago.
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Stalactites and stalagmites are also on display. Formed from millions of years of limestone drippings, they're a testament to the age of Niagara Cave. They're also evidence of the water that has flowed through this cave for millennia.
Felipe Hernandez/Google
Speaking of water, Niagara Cave's waterfall is its most famous feature. It is formed by an underground river that is still slowly eroding the cave's limestone to this day.
Jessica J 1177/Google
From where it begins, the flowing water falls 60 feet down into a deep crevice.
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Visitors can get an up-close look at this rare underground waterfall. It's the only one of its kind in Minnesota!
Sarah F/TripAdvisor

Have you heard of or been to this underground waterfall? What did you think? Let us know in the comments below! If you’d like to plan a visit, note that Niagara Cave is open 9:30 a.m. to 5:30 p.m every day. For more information about planning your visit, check out the Niagara Cave website and Facebook page.

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