- showcaves.com english/usa/showcaves/MarkTwain.htmlMark Twain Cave is actually the cave described in Mark Twain's book The Adventures of Tom Sawyer, or at least it influenced the cave descriptions very much.
- campendium.com mark-twain-cave-campgroundThe Mark Twain Cave is an easy cave to walk through and fun. We would stay at this site again if visiting Hannibal.
- thedyrt.com camping/missouri/mark-twain-cave-and-…Whether you're here for a night or a few days, Mark Twain Cave & Campground offers a blend of convenience, comfort, and a touch of adventure.
- amateurcamper.com 2022/07/exploring-the-famous-…Mark Twain Cave is a national landmark located just outside of historic Hannibal, Missouri. Discovered in 1820 by accident when a man was trying to locate his dog.
- americanheritagetrees.org partners/mark-twain/The Mark Twain Cave Bur Oak, known as the Liberty Tree Burr Oak, still grows just outside the Mark Twain Cave in Hannibal.
- visitmo.com things-to-do/mark-twain-cave-complexThis Cave is one of a few labyrinth style caves in the world and was first shown in the 1880s after being made famous by Samuel Clemens, or Mark Twain.
- travalour.com attraction/28470-mark-twain-caveMark Twain Cave in Marion County, Missouri, is the place to be! This cave is packed with history, geology, and good old-fashioned fun.
- 101theeagle.com mark-twain-cave-named-among-…If you've lived in the Hannibal area and gone through the Mark Twain Cave complex more than a few times in your life, this really won't be news.
- familydaysout.com attractions-usa/mark-twain-cave…You certainly can in Missouri! The Mark Twain Cave Complex actually has the country's oldest AND newest show cave - because it's the FIRST show cave!
- checkitofftravel.com exploring-mark-twain-cave/Missouri’s oldest show cave, Mark Twain Cave is one of the locations that inspired Twain’s The Adventures of Tom Sawyer.