Marengo Cave, Natural landmark cave system in Crawford County, Indiana, US.
Marengo Cave extends through five miles of limestone passageways, featuring mineral formations, underground pools, and two distinct touring routes for visitors.
Two siblings, Orris and Blanche Hiestand, discovered the cave in September 1883 while investigating a sinkhole in the woods near their home.
The cave system serves as an educational center where school groups and organizations learn about geological processes and underground ecosystem formations.
Tours include the mile-long Dripstone Trail lasting 70 minutes and the Crystal Palace route covering one-third mile in 40 minutes.
The cave maintains a constant temperature of 52 degrees Fahrenheit and contains speleothems formed over millions of years through water erosion.
Location: Indiana
GPS coordinates: 38.37555,-86.33993
Latest update: May 11, 2025 14:11
Indiana features a variety of natural and cultural sites across its counties. Visitors can explore underground networks such as the Bluespring Caves, which extend over 34 kilometers, view the sandstone canyons and geological formations at Turkey Run State Park, or admire the Cataract Falls on Mill Creek. The state also has 19th-century covered bridges like the Bridgeton Bridge built in 1868, as well as religious sites such as the Cave of Our Lady of Lourdes replicating the Lourdes sanctuary. History and art enthusiasts will find preserved residences like the T.C. Steele State Historic Site, with the painter’s original studio and period furnishings. The area also features unique structures such as the New Harmony Labyrinth, a stone replica of the Chartres Cathedral labyrinth, and the Artcraft Theater from the 1920s still showing films in its original setting. These destinations offer insights into Indiana's architectural heritage as well as its conserved natural spaces.
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