![Mammoth Cave: Coke bottles, ticket stubs, pre-historic debris discovered in world's longest-known cave system Mammoth Cave: Coke bottles, ticket stubs, pre-historic debris discovered in world's longest-known cave system](https://scx2.b-cdn.net/gfx/news/hires/2022/mammoth-cave.jpg)
Mammoth Cave: Coke bottles, ticket stubs, pre-historic debris discovered in world's longest-known cave system
![Mammoth Cave: The World's Longest Cave System (Famous Caves of the World): Burnham, Brad: 9780823962587: Amazon.com: Books Mammoth Cave: The World's Longest Cave System (Famous Caves of the World): Burnham, Brad: 9780823962587: Amazon.com: Books](https://m.media-amazon.com/images/I/710sWECbVbL._AC_UF1000,1000_QL80_.jpg)
Mammoth Cave: The World's Longest Cave System (Famous Caves of the World): Burnham, Brad: 9780823962587: Amazon.com: Books
Map of the explored parts of the Mammoth Cave of KY. (1845) - Maps at the Tennessee State Library & Archives - Tennessee Virtual Archive
![Diversity | Free Full-Text | Mammoth Cave: A Hotspot of Subterranean Biodiversity in the United States Diversity | Free Full-Text | Mammoth Cave: A Hotspot of Subterranean Biodiversity in the United States](https://www.mdpi.com/diversity/diversity-13-00373/article_deploy/html/images/diversity-13-00373-g001.png)