Marengo Cave

Marengo Cave is a limestone cave system extending through passageways deep underground, displaying mineral formations and underground pools throughout. The site offers visitors two separate touring routes with different lengths and features.

The cave was discovered by two siblings in 1883 while they explored a sinkhole near their home in the woods. This chance find led to its opening as a public attraction and eventual development as a tourist site.

The cave system serves as an educational center where school groups and organizations learn about geological processes and underground ecosystem formations.

Visiting involves walking on uneven paths and stairs through underground rooms, so wear comfortable shoes with good grip. The underground setting means the ground can be slippery in places, so take your time navigating.

The cave's interior stays at a constant temperature of around 52 degrees Fahrenheit year-round, creating a natural cooling effect. Many visitors notice how this stable temperature contrasts sharply with the changing weather outside.

Location: Indiana

GPS coordinates: 38.37555,-86.33993

Latest update: December 6, 2025 16:03