Top 8 Kentucky Caves to Tour

Applachian cave opening in Eastern Kentucky

Universal Stopping Point Photography/Getty Images

We all know Kentucky's horse farms and hills are stunning sights, but have you explored what lies beneath these picturesque landscapes? You may not realize it, but Kentucky is home to an extensive system of caves, some of which may be toured. Cave exploring, also known as spelunking, is an ideal activity for science buffs and history aficionados alike.

  • 01 of 08
    Mammoth Cave National Park
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    The world's longest surveyed cave system, Mammoth Cave contains 400 miles of explored passageways, with more being discovered each year. Mammoth Cave National Park provides tours covering more than 10 miles of the system. Most tours cover 1 to 2 miles. Along with its immense length, Mammoth Cave houses clues to how the cave has been used by humans for thousands of years.

    1 Mammoth Cave Parkway, Mammoth Cave, KY 42259

  • 02 of 08

    Lost River Cave

    Lost River Cave

    Lost River Cave

    Feel like going on an underground boat tour? Well, this is one spot you can do it. In addition to exploring this 7-mile cave system—including having to lower your head to enter an enormous cave—there are daily nature activities, easy walking trails, a discovery cave crawl for kids, and more.

    2818 Nashville Road, Bowling Green, KY 42101

  • 03 of 08

    Diamond Caverns

    Diamond Caverns, Kentucky

    James St. John/Flickr/CC BY 2.0

    When this cave was discovered in 1859, its first visitors said the area's glimmering stones looked like diamonds, and thus Diamond Cave received its name. The fourth-oldest cave attraction in the country, Diamond Caverns has a lighting system and handrails. The guided tour is a half mile.

    1900 Mammoth Cave Parkway, Park City, KY 42160

  • 04 of 08

    Crystal Onyx Cave

    Crystal Onyx Cave
    James St. John/Flickr

    Smaller than other Kentucky cave attractions, Crystal Onyx was discovered in 1960 and is now considered an important archeological site because Native American remains—some more than 3,000 years old—were found in the cave. Tours are a half mile and last approximately one hour.

    425 Prewitts Knob Road, Cave City, KY 42127

    Continue to 5 of 8 below.
  • 05 of 08

    Hidden River Cave & American Cave Museum

    Located beneath the city of Horse Cave, Hidden River Cave was once the source of drinking water and hydroelectricity for the community. Groundwater pollution led to its closing in 1943.

    In the late 1980s, the American Cave Conservation Association relocated its national headquarters to Horse Cave to restore Hidden River Cave and open a museum and educational center at the site. A bat rehabilitation center is also in progress. Hidden River Cave is now open to visitors year-round.

    119 E. Main Street, Horse Cave, KY 42749

  • 06 of 08

    Mammoth Onyx Cave at Kentucky Down Under

    Great Onyx Cave

    James St. John/Flickr/CC BY 2.0

    Discovered in 1799, Mammoth Onyx Cave is part of a larger, Australian-themed attraction called Kentucky Down Under. With kangaroos, a bird garden, gem mining, and an outback cafe, Kentucky Down Under is a popular family attraction. A tour of the cave is included in admission to Kentucky Down Under. 

    3700 L and N Turnpike Road, Horse Cave, KY 42749

  • 07 of 08

    Onyx Cave

    Onyx Cave

    James St. John/Flickr/CC BY 2.0

    Onyx Cave is a wet cave that was discovered in 1971 when a parking lot was being constructed. With its beautiful coral, a 40-foot column, and a wall of cave bacon, it was decided that it would be an attractive Kentucky cave tour; it opened in 1973. The cave is 60 degrees and tours are 30 minutes.

    101 Huckleberry Knob Road, Cave City, Kentucky 42127

    (Psst!... If you are in Cave City with the kids, drive by​ the Wigwam Village Inn, part of a motel chain that served as inspiration for the Cozy Cone Motels featured in the Pixar film Cars.)

  • 08 of 08

    Outlaw Cave at Kentucky Action Park

    Outlaw Cave

    James St. John/Flickr/CC BY 2.0

    Outlaw Cave offers a guided tour of many classic cave formations. The cave was named Outlaw because bandits such as Jesse James hid out here and in other area caves. The natural formations were not only hidden but also large enough for the bandits to ride their horses into.

    3057 Mammoth Cave Road, Cave City, Kentucky 42127