Berkeley Pit
Under $25Look out from a viewing stand over a mile-long former open-pit copper mine that is slowly filling with acidic water.

Photo: David Wilson, CC BY 2.0, via Wikimedia Commons. Cropped and resized.
An outdoor-heavy museum built on the historic Orphan Girl Mine yard in Butte, with a recreated 1890s mining camp and an underground mine tour.
155 Museum Way, Butte, Montana, 59701, United States · Butte, MT
The World Museum of Mining sits on the grounds of the Orphan Girl Mine in Butte, Montana. Its 100-foot steel headframe marks the site, and the museum says the mine yielded silver, lead, and zinc between 1875 and 1956. Visitors can take a guided underground tour that goes about 100 feet into the mine. Above ground, the Hell Roarin' Gulch area recreates an 1890s mining camp with historic buildings and period exhibits such as a general store, saloon, bank, and schoolhouse. The museum describes itself as mostly outdoors, so weather affects the visit.
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