# Colossal Cavern

- **Country:** United States
- **Geology:** Limestone
- **Location:** Kentucky, United States
- **Photo Caption:** An entrance to Colossal Cavern

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.

![Photo of Colossal Cavern](https://upload.wikimedia.org/wikipedia/commons/d/db/Colossal_Cavern_Entrance.jpg)

**Source:** https://en.wikipedia.org/wiki/Colossal_Cavern (Wikipedia, CC BY-SA)