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Berkeley Pit overview from Walkerville, Montana | by Northern Pike
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Berkeley Pit overview from Walkerville, Montana

HDR pano 3x3 images w/ Hoya polariser

The Berkeley Pit is a former open pit copper mine located in Butte, Montana, United States. It is one mile long by half a mile wide with an approximate depth of 1,780 feet (540 m). It is filled to a depth of about 900 feet (270 m) with water that is heavily acidic (2.5 pH level), about the acidity of cola or lemon juice.[1] As a result, the pit is laden with heavy metals and dangerous chemicals that leach from the rock, including arsenic, cadmium, zinc, and sulfuric acid.[1]

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Taken on August 7, 2012