easy
1–1.5 hours
Suitable for most fitness levels including children over 7 years old; requires walking on uneven but manageable terrain.
Experience the magic of Niagara Cave on a mile-long hike under black lights. Perfect for families seeking a unique outdoor adventure in Minnesota.
Discover an extraordinary adventure deep within the heart of Harmony, Minnesota, with the Black Light Tours offered by Niagara Cave. This unique experience takes you on a captivating mile-long hike through the cave’s winding passages, culminating in an unforgettable 15-minute section completely in darkness. As your eyes adjust, black lights reveal the cave’s stunning array of naturally fluorescent formations glowing in vivid colors, creating a magical underground spectacle. Designed for families with children aged 7 and up, this special tour runs on select Saturday evenings, offering a relaxed and intimate way to explore the cave’s fascinating geology and natural beauty. Whether you’re a curious explorer or seeking an out-of-the-ordinary outing, Niagara Cave’s Black Light Tours deliver both wonder and education in a safe, private setting. Expect mild physical activity with plenty of chances to pause and take in the unique environment around you. Don’t forget to keep your camera ready for the mesmerizing colors and natural features that make this tour unlike any traditional cave experience. A perfect blend of adventure and science, it’s sure to leave lasting memories for all ages.
While the tour features black lights, a personal flashlight can be useful for moving safely before and after the dark segment.
The cave terrain can be uneven and slippery, so closed-toe shoes with good traction are recommended.
Cave temperatures stay cool year-round, so bring a light jacket or sweater to stay comfortable.
Portions of the tour may involve narrow passages and uneven footing, which might be challenging for those with mobility issues.
Niagara Cave was discovered in the late 19th century and has since become a site to showcase stunning geological formations unique to southeastern Minnesota.
Niagara Cave tours emphasize protecting delicate cave formations, encouraging visitors to follow strict no-touch and no-litter guidelines to preserve the ecosystem.
Provides grip and support on rocky, sometimes slippery cave floors.
Keeps you warm in the cave’s cool and consistent temperatures.
spring specific
Helps navigate safely outside of the black light section during low light conditions.
Stay hydrated during the hike, especially in warmer months.
summer specific