Did you know Montana has something that’s often called an “acid pit of doom?”

The Berkeley Pit is a former open pit copper mine located in Butte. It’s filled with water that is heavily acidic, laden with heavy metals, rich with dangerous chemicals, and just a real problem in general.

The Berkeley Pit is a small part of Butte’s fascinating history. When you’re there, make sure to check out the World Museum of Mining.

OnlyInYourState may earn compensation through affiliate links in this article.

Explore Montana