Mammoth Cave

Mammoth Cave is home to the world’s largest cave system at 462 mapped miles. One of the largest rooms in the cave is over a quarter of an acre in size with a ceiling height of 40 feet!

Not only is Mammoth Cave and the surrounding Green River Valley protected as a National Park, it is also designated as a UNESCO World Heritage Site and an International Biosphere Reserve. The cave system was formed by water dissolving soft rock, which created tunnels, sinkholes, cave passageways, and more.

The inside of Mammoth Cave stays 54 degrees at all times, so it is a great year-round destination. Touring the cave via one or more of the many guided tours is the best way to explore the cave and learn about its history and geology. This history is absolutely fascinating!

Best Things to Do in Mammoth Cave

GO ON A GUIDED CAVE TOUR: This is by far the best thing to do at Mammoth Cave. You cannot enter the cave without booking a guided tour, and there are over 10 to choose from. This post will help you decide which tour(s) is right for you.

SAND CAVE: Short, boardwalk trail to the site where Floyd Collins unfortunately got trapped inside and died while exploring this cave in 1925. The rescue effort lasted 18 days and became a national news story.

HISTORIC TOUR: If you only have time for one tour, I recommend the 2-hour Historic Tour. Highlights of this tour include highlights on this tour include the Rotunda, the Bottomless Pit, Fat Man’s Misery, and the 155-stair climb out of Mammoth Dome.

DOMES & DRIPSTONES TOUR: If you want to see stalagmites and stalactites, look no further than the Domes and Dripstones tour! This tour is a great compliment to the Historic Tour as it explores a totally different section of the cave system.

KAYAKING ON THE GREEN RIVER: If weather and river levels permit, you can go kayaking on the Green River at Mammoth Cave National Park. Check out Adventures of Mammoth Cave for information on trips and boat rentals.

EXHIBITS IN THE VISITOR’S CENTER: The Visitor’s Center has a great exhibit to learn about the fascinating history of Mammoth Cave.

HIKE AN ABOVE-GROUND TRAIL: Even though exploring the cave is the main attraction here, there are over 60 miles of above-ground trails to hike.

When to Visit

You can visit Mammoth Cave year-round, as the cave stays at 54 degrees at all times. 

The best time to visit depends on what you want to do here. If you’re concerned about crowds and want to spend most of your time in the cave, winter can be a great time to visit. There are less tours offered in the winter however, so if you want to do a more “niche” tour, you might have to visit during the summer when the tour you want is offered.

Summer is definitely the busiest season which means the most tours are offered, but also larger crowds. You’ll definitely want to book your cave tour tickets far in advance if you plan a visit during the summer.

Spring and fall have mild weather if you want to add on other outdoor activities to your visit. Lots of local schools do field trips here in the spring and fall, so keep that in mind if you plan to visit on a weekday during these seasons. It is also a popular fall break spot for local schools, so mid-October can get busy as well. You will see peak fall color here from early to mid October.

We had a great experience visiting in the winter. Some restaurants and most of the tourist trap shops and attractions will be closed (which was honestly a plus for us), but lodging prices and crowds will be much lower.

How Many Days Do You Need?

One full day at Mammoth Cave National Park is all you need to go on a couple of cave tours and learn about the history and geology of the cave. This post goes into more detail about how I would structure one day in the park.

If you want to go hiking or kayaking along with doing a cave tour or two, plan on spending two days (one to explore the cave, and one for an above-ground adventure).

How to Get There

Mammoth Cave National Park is located in south-central Kentucky, about halfway between Louisville and Nashville. You’ll take I-65 to the Cave City or Park City exit, and then Mammoth Cave Road will lead you straight into the park.

If you plan to fly, Nashville or Louisville are your best airports. Getting to Mammoth Cave is an easy 2-hour drive from each city.

Mammoth Cave is also a convenient road trip destination since it is so close to a lot of southern and midwestern cities.

Where to Stay

Mammoth Cave National Park does have its own lodge and cottages on the premises, right outside the Visitor’s Center. This can be a good option if you want to stay in the park, but it’s definitely not necessary. More information on the Mammoth Cave Lodge can be found here.

Cave City and Park City both make a great home base for visiting Mammoth Cave. There are plenty of chain hotels and restaurants nearby right off the interstate exit. Both towns are just a short 15-minute drive from the Visitor’s Center. We stayed at the Hampton Inn in Cave City, and it was fine for a short stay!

The hotels and restaurants around here are nothing special, but they have everything you need for a comfortable stay.