Marengo Cave National Landmark

Marengo Cave National Landmark is one of Indiana's most remarkable natural attractions, featuring an extensive underground cave system filled with stunning stalactites, stalagmites, flowstone formations, and crystal-clear pools. Designated as a National Natural Landmark, the cave offers visitors the opportunity to explore beautifully illuminated passageways while learning about the area's unique geology and history. Combined with family-friendly activities, scenic surroundings, and fascinating underground landscapes, Marengo Cave is a popular destination for nature lovers, adventure seekers, and travelers exploring southern Indiana.