While there are plenty of unique tours you can take in MN, none are as fascinating as the underground tour at Lake Vermillion – Soudan Underground Mine State Park. Not only can you take a ride through the mine, but you can also tour their state-of-the-art underground physics lab!

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Want more underground adventures? Take a tour of Niagara Cave in Southern MN – complete with an underground waterfall and wedding chapel, or any of these 4 other caves!

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