Discover the haunting story behind the Berkeley Pit in Butte, Montana—a former open-pit copper mine that has turned into one of the most toxic lakes in America. This video dives into the history, ...

Butte, Mont. • There’s a tale told about a miner who found copper cans in his garbage dump in the early days of mining. Wastewater from copper mining had flowed through his land, he said, and turned ...