Marengo Cave is a privately owned cave located in Marengo, Indiana. One of only four show caves in Indiana, public tours of the cave have been given since 1883. Tours commenced just days after the cave’s discovery by two school children. The cave was designated as a National Natural Landmark in 1984.
This article uses material from the Wikipedia article “Marengo Cave“, which is released under the Creative Commons Attribution-Share-Alike License 3.0.