The park contains the remnants of the Coenen Livery Stable, a historical structure listed on the National Register of Historic Places.
The caves were carved by glacial meltwater during the last Ice Age, resulting in distinctive solutional cave systems.
The site hosts a delicate micro-climate that supports species of plants more commonly found in northern boreal forests.
Tartarus Cave is the longest known cave in the park system, extending over 100 feet in length.
The Niagara Escarpment, which forms the park's cliffs, is a UNESCO World Biosphere Reserve that stretches from New York to Wisconsin.
The park was established following the donation of land by the Cherney family, who operated a quarry on the site in the mid-20th century.
The limestone bedrock here dates back to the Silurian period, approximately 425 million years ago.
Manitowoc County Cherney Maribel Caves Park is a 75-acre protected site managed by the Manitowoc County Parks Department, centered around a series of karst limestone caves. The park features a unique geology formed by the Niagara Escarpment, which creates naturally occurring subterranean caverns. Visitors can explore various marked hiking trails that traverse wooded ravines and the West Twin River valley. The site is recognized for its paleontological significance, with fossil-rich limestone walls visible along the cliff faces. Several caves, including Tartarus Cave, are gated or seasonally closed to protect the local bat population from White-Nose Syndrome. The park infrastructure includes picnic areas, a playground, and interpretive signage detailing the region's geological history.
The wooden observation platform overlooking the West Twin River and the exposed limestone rock faces.
Bring a headlamp or flashlight if you plan to view the cave entrances, as interior lighting is not provided.
Wear sturdy, closed-toe hiking boots with good grip, as the terrain is rocky and can be slippery near the cliff base.
Use insect repellent during the warmer months, as the damp ravine environment is prime habitat for mosquitoes and ticks.
Attempting to climb the unstable limestone cliff faces or entering gated cave entrances, which is both dangerous and illegal.
Caves are generally closed for public entry to protect bat habitats; park grounds remain open year-round, though trails may be inaccessible during heavy winter snow or spring thaw flooding.
Entering caves is strictly prohibited without authorization to prevent the spread of White-Nose Syndrome among bats; stay on marked trails to protect sensitive geological features.
