Colossal Cavern is a cave in Kentucky, United States, the main entrance of which is at the foot of a steep hill beyond Eaton Valley, and 1.5 miles from Mammoth Cave.
It is connected with what has long been known as the Bedquilt Cave. Several entrances found by local explorers were rough and difficult. They were closed when the property was bought in 1896 by the Louisville & Nashville railway and a new approach made. From the surface to the floor is under Chester Sandstone and in the St. Louis Limestone.
In popular culture
thumb|The ADVENT videogame: "Somewhere nearby is Colossal Cave, where others have found fortunes in treasure and gold."
The Bedquilt section of the caves was the inspiration and setting for the first text adventure computer game. Created by Will Crowther, a caver who spent many hours helping to survey the cave, and appropriately called "Colossal Cave" or "ADVENT", the computer game was expanded by Don Woods into the game now known as Adventure which was cited as inspiration for the popular text adventure game Zork.
See also
- List of caves in the United States