Believed to be the planet’s third largest cave, the Jewel Cave spans more than 177 mapped miles, with much more still left to be discovered. You can enjoy one of the multiple guided tours to explore the rugged charm of the attraction, the main draw of which are the cave’s stunning calcite formations decorating the rather aesthetic looking cave walls. Sign-up for the scenic tour that takes visitors across several secret chambers and network of passageways below 720 plus steps. Obviously, the tour is recommended for young children. Another popular tour is the Historic Lantern, where you can explore the Heavenly Room and Dungeon Room only with the light of a lantern. If you’re bitten by the adventure bug and seek to explore the caves in their most natural forms, go with the Wild Caving tour.
Undoubtedly the world’s largest cave system, Mammoth Cave is justifiably named, considering the fact that new discoveries are being made here all the time. Running across a staggering 400 miles, the natural attraction offers visitors the option of choosing from a wide range of guided tours according to ability and difficulty levels. The two most popular cave tours are the Great Onyx Tour and the Historic Tour. Savor the experience of strolling through the caves and witnessing massive temperature variations, in addition to learning more about the fantastic underground cave system.