Our Pick
Posted on @rawstates
The Berkeley Pit
1955
Butte, Montana
Public domain · Wikimedia Commons
Open-pit mining ate a mile-wide hole through the edge of Butte, and when the pumps were switched off in 1982 it began filling with water as acidic as lemon juice and loaded with metals. A flock of snow geese landed on it in 2016 and thousands died. It is one of the largest Superfund sites in the country.
That was 1 of the hidden places.
Location: documented spot
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