You have 2 trips in progress. See all
Mark Twain Cave — originally McDowell's Cave — is a show cave located near Hannibal, Missouri, USA. It is the oldest operating show cave in the state, giving tours continuously since 1886. Along with nearby Cameron Cave, it became a registered National Natural Landmark in 1972, with a citation reading "Exceptionally good examples of the maze type of cavern development". Mark Twain Cave — as "McDougal's Cave" — plays an important role in the novel The Adventures of Tom Sawyer (1876) by Mark Twain and was later renamed in honor of the author, a Hannibal native.Early historyGeologyGeologically Mark Twain Cave and its nearby neighbor Cameron Cave differ from most of the 6,500+ caves found in Missouri. Both are believed to be remnants of a much larger cave system cut apart by a glacier and millions of years of erosion, leading to speculation by geologists and common citizens alike that there may be as yet further undiscovered caves in the Hannibal region. This speculation was heightened in 2006 when the entrance to a previously unknown cave was found during construction of a new elementary school. Other differences in Mark Twain Cave are the near total lack of speleotherms, mineral deposits like stalagmites and stalactites in large open areas. Mark Twain Cave and Cameron Cave instead have a multitude of narrow, winding passages. The caves are made mostly of a soft limestone called Louisiana Lithographic Limestone and found only in a 35-mile area around Hannibal and Louisiana, Missouri. The limestone has been estimated by geologists as around 350 million years old, while the cave passages were formed some 100 million years ago. Mark Twain Cave covers some six and a half miles consisting of four entrances and 260 passages, maintaining a year around temperature of 52 degrees Fahrenheit. Our Hannibal trip itinerary site makes visiting Mark Twain Cave and Cameron Cave and other Hannibal attractions simple, and helps you make a travel plan personal to you.
Create a full itinerary - for free!
Mark Twain Cave and Cameron Cave reviews
This Missouri show cave is prominently featured in the American classic, Tom Sawyer. It wouldn’t matter if it was just a ditch - you are walking in the steps of Mark Twain and some of his amazing...
This Missouri show cave is prominently featured in the American classic, Tom Sawyer. It wouldn’t matter if it was just a ditch - you are walking in the steps of Mark Twain and some of his amazing... more »
At first, I was a bit hesitant to spend $25 to go in a cave but this was a great experience. The cave itself is incredibly cool (and much bigger than I thought), with many interesting passageways and.... more
At first, I was a bit hesitant to spend $25 to go in a cave but this was a great experience. The cave itself is incredibly cool (and much bigger than I thought), with many interesting passageways and.... more »
Plan your trip to Hannibal
- Get a personalized tripA full day by day itinerary based on your preferences
- Customize itRefine your trip. We'll find the
best routes and schedules
- Manage itEverything in one place. Everyone on the same page.Know more
Popular things to do in Hannibal
Hidden gems in Hannibal
Museums in Hannibal
Side trips from Hannibal
Nearby attractions in Hannibal
Historic Sites in Hannibal
Trips in Mark Twain Cave and Cameron Cave by other users
39 days in Missouri BY A USER FROM AUSTRALIA Kansas City Hannibal Hermann 8 days in Saint Louis BY A USER FROM UNITED STATES Mark Twain Boyhood Home Historic Downtown Hannibal Mark Twain Memorial Lighthouse 22 days in Continental USA BY A USER FROM UNITED KINGDOM Saint Louis Branson Tulsa 60 days in Saint Louis BY A USER FROM GERMANY World Chess Hall of Fame Cathedral Basilica of Saint Louis Central West End 29 days in Saint Louis BY A USER FROM FRANCE Missouri History Museum Forest Park Cathedral Basilica of Saint Louis 23 days in United States BY A USER FROM GERMANY Chicago Keokuk Denver