Niagra Cave is a large, well-kept and well-run attraction. The tour guides are articulate and knowledgeable, the upper grounds are quite attractive, and the cave itself has clearly been tended and protected. There are few signs of vandalism or damage from visitors. While the opening for access, paths, and lights were clearly added to make the cave welcoming to visitors, most of the natural features are intact. These include flow-stone, drip-stone, fossils and a fast-flowing an underwater river. Also, kudos to their web designer – nice site!

Niagra Cave
29842 County Road 30
Harmony, MN 55939