The Summitville mine was a gold mining site in Rio Grande County, Colorado 25 miles (40 km) south of Del Norte. It is remembered for the environmental damage caused in the 1980s by the accidental leakage of mining by-products into local waterways and then the Alamosa River.
Read more about Summitville Mine: History, Cease-and-desist Order and Aftermath, Natural Versus Manmade Pollution
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